Author Topic: Hole saws- which one is the best  (Read 13031 times)

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Offline donwon

  • Posts: 152
Hole saws- which one is the best
« on: December 29, 2014, 09:41 PM »
Looking for a set of hole saws and wondering what people recommend. Has to be a good set that will last and stay sharp.

Thanks!

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Offline handymanny213

  • Posts: 9
Re: Hole saws- which one is the best
« Reply #1 on: December 29, 2014, 10:04 PM »
Have few different sets but these have lasted quite long...

http://www.all-spec.com/products/31630.html?gclid=CLCMoKbj7MICFQ6paQodSnoAiw

Offline neilc

  • Posts: 3042
Re: Hole saws- which one is the best
« Reply #2 on: December 29, 2014, 10:04 PM »
I have a Milwaukee set but have been replacing the blades with Lenox blades when they wear out and like them a lot.  Amazon stocks both.

Offline wow

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Re: Hole saws- which one is the best
« Reply #3 on: December 29, 2014, 10:47 PM »
I think I have tried all of them. I like either Milwaukee or Lenox the best. Most recently I have settled on Lenox...
« Last Edit: December 30, 2014, 05:07 AM by wow »
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Offline Tim Raleigh

  • Posts: 3585
    • Oakville Cabinetry
Re: Hole saws- which one is the best
« Reply #4 on: December 29, 2014, 10:55 PM »
Looking for a set of hole saws and wondering what people recommend. Has to be a good set that will last and stay sharp.

Thanks!

Starrett

Offline jaymon5

  • Posts: 87
Re: Hole saws- which one is the best
« Reply #5 on: December 29, 2014, 11:08 PM »
starrett & lenox

Offline Linbro

  • Posts: 203
Re: Hole saws- which one is the best
« Reply #6 on: December 30, 2014, 12:51 AM »
For timber/sheet materials I use 'Tornado' - http://www.tornadodrilling.com/product.php?pId=26

Offline Untidy Shop

  • Posts: 2746
Re: Hole saws- which one is the best
« Reply #7 on: December 30, 2014, 02:54 AM »
Linbro, where do you get these from in Melbourne? 
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Offline rajuliano

  • Posts: 26
Re: Hole saws- which one is the best
« Reply #8 on: December 30, 2014, 03:55 AM »
I have the Lenox 13-piece set from Lowes. Pretty happy with it.

Offline Linbro

  • Posts: 203
Re: Hole saws- which one is the best
« Reply #9 on: December 30, 2014, 04:56 AM »
Hey Untidy Shop, - Nikpol and Lincoln Sentry have them. 'tradiesonline' also have them, on ebay. If you have a specialty joinery/cabinet hardware supplier nearby they should be able to help.

Offline DB10

  • Posts: 911
Re: Hole saws- which one is the best
« Reply #10 on: December 30, 2014, 05:46 AM »
I've been using Bahco and also Sutton.  No complaints with either but the Bahco are the better set in my opinion.

Offline Tom Gensmer

  • Posts: 766
  • Residential Remodeler in Minnesota
Re: Hole saws- which one is the best
« Reply #11 on: December 30, 2014, 11:18 AM »
Looking for a set of hole saws and wondering what people recommend. Has to be a good set that will last and stay sharp.

Thanks!

What application will these hole saws be used for?

For drilling in rough lumber (think: electrical and plumbing), you simply can't beat the 1- and 3- toothed, carbide tipped hole saws. I have a 4 5/16" Leonx 1-tooth hole saw that I regularly use for running 4" ducting. Most important for me is that it tends to not bind as badly as traditional hole saws, very important when you get into these larger sizes. Note that these saws tend to leave a rougher cut, sacrificing tear-out for speed and safety. I believe that Lenox, Milwaukee, and maybe Bosch make these low-tooth count, carbide tipped saws.

For more precision work, almost any brand bi-metal blade should hold up reasonably well. When my hole saws get dull I just take them to my local contractor supply supply and send them out for sharpening. Certainly not inexpensive, but it's cheaper than constantly buying new hole saws.

There are also high tooth count, carbide tipped hole saws, but I do not yet have experience with these.

There are also specialized hole saws for sheet metal, again from Lenox.

Knowing your applications and materials will help guide your purchase. Hope this helps!  [smile]
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Offline VW MICK

  • Posts: 881
Re: Hole saws- which one is the best
« Reply #12 on: December 30, 2014, 11:34 AM »
Have actually always used starett they are good .but have recently found the Bosch ones to be better for wood .

Offline neeleman

  • Posts: 1274
Re: Hole saws- which one is the best
« Reply #13 on: December 30, 2014, 01:06 PM »
I use a set of Pro-Fit Multi-Purpose hole saws. The best I ever used. And by the way it's a Dutch product.
The famous brand Famag also sells them under their own name and that says enough of the quality.
They use a special connector to the saw, which can easily detach the plug from the cylinder.
The saws have one or more Widia teeth which last forever. I once did around 400 holes in 18 mm MDF and the saw is still going strong=sharp.

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Offline Grasshopper

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Re: Hole saws- which one is the best
« Reply #14 on: December 30, 2014, 05:15 PM »
I'm pretty happy with my Lenox hole saws.

I've found that if I cut through the hidden side until the arbor come through the finish side. I then line the arbor up on the other side and cut running the saw in reverse.

Doing this eliminated any tear out and gave a perfect hole.
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Offline rst

  • Posts: 2655
Re: Hole saws- which one is the best
« Reply #15 on: December 30, 2014, 05:45 PM »
I am a professional locksmith (and glazier, automatic door tech and plastics fabricator)... we use Milwaukee's Ice carbide holesaws.  I have tried Lenox and Bosch but the Milwaukee's last best for me.

Offline galwaydude18

  • Posts: 842
Re: Hole saws- which one is the best
« Reply #16 on: December 30, 2014, 06:02 PM »
I use the bosch multi construction holesaws. They are the best I have ever used.

Offline justinh

  • Posts: 165
    • Profiled Edge Woodworks
Re: Hole saws- which one is the best
« Reply #17 on: December 30, 2014, 06:07 PM »
Lenox carbide tipped.  High tooth count not the 3 tooth.  Long lasting and sharpenable.


Offline T. Ernsberger

  • Posts: 895
Re: Hole saws- which one is the best
« Reply #19 on: December 30, 2014, 11:53 PM »
I have bosch system and its awesome.   It has a quick disconnect that pops the hole saw on and off, very similar to the centrotec system.

Offline SRSemenza

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Re: Hole saws- which one is the best
« Reply #20 on: July 02, 2020, 12:06 PM »
Reviving this topic. I am looking for a large set. Something on the order of the Milwaukee 28 pc or the Lenox 21 pc.  Cutting mostly solid and sheet goods.

I would prefer carbide ( I have one Lenox high tooth count carbide). But can't find any large sets and building one up of individuals becomes costly. I am not going to be cutting a lot of holes so how well do the Bi-Metal hold up? I have a couple that seem to fine after a few holes each. But how about on metal should it ever come up?

I have never used the one to three tooth saws. I think I will want cleaner cuts.  One thing about them is that @Tom Gensmer  said they bind less. It looks to me that that single or triple large tooth would catch / bind more than a higher tooth count?

Looking for input on the current brands / selections.


Seth

Offline rst

  • Posts: 2655
Re: Hole saws- which one is the best
« Reply #21 on: July 02, 2020, 01:31 PM »
I have and use the Milwaukee 28 pc set.  I am more than pleased with performance and I drill wood, plastic and metal from 18ga doors to 1/2" aluminum.  My gripe with hole saws is that there used to be pilot drills that only were ground for about 1/2" so that once you were through surface material the pilot would not run off and widen the pilot hole and allowing the hole saw to wander.  Craftsman and Milwaukee both had these.  I'm assuming some bean counting accountant that never drilled anything in their life decided that specialty drills like these were not optimal for the bottom line.
« Last Edit: July 02, 2020, 01:37 PM by rst »

Offline TwelvebyTwenty

  • Posts: 107
Re: Hole saws- which one is the best
« Reply #22 on: July 02, 2020, 01:34 PM »
Reviving this topic. I am looking for a large set. Something on the order of the Milwaukee 28 pc or the Lenox 21 pc.  Cutting mostly solid and sheet goods.

I would prefer carbide ( I have one Lenox high tooth count carbide). But can't find any large sets and building one up of individuals becomes costly. I am not going to be cutting a lot of holes so how well do the Bi-Metal hold up? I have a couple that seem to fine after a few holes each. But how about on metal should it ever come up?

I have never used the one to three tooth saws. I think I will want cleaner cuts.  One thing about them is that @Tom Gensmer  said they bind less. It looks to me that that single or triple large tooth would catch / bind more than a higher tooth count?

Looking for input on the current brands / selections.


Seth

I favour Bosch in the UK - not sure how readily available they would be in your market - but they take a beating and keep on cutting.

Offline Maestronus

  • Posts: 19
Re: Hole saws- which one is the best
« Reply #23 on: July 02, 2020, 01:55 PM »
Bosch indeed has super durable carbide hole saw sets of 8 or 13 pieces. Marketing name is ‘Endurance for heavy duty’. Availability in US might not be great as usual.

https://www.amazon.co.uk/Bosch-Professional-2608594186-Universal-13-Piece/dp/B07H2D12QW/
« Last Edit: July 02, 2020, 02:23 PM by Maestronus »
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Offline Peter_C

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Re: Hole saws- which one is the best
« Reply #24 on: July 02, 2020, 02:57 PM »
Not a big fan of Milwaukee bits and blades as they kinda suck, but last year I needed so many new parts it was cheaper to just buy another complete set for $129 while it was on sale at HD, see below. Lennox are better quality for cutting metal, but you can get the kit, pre-drill with a cobalt bit in metal, then switch to the hole saw setup to save the weaker Milwaukee center bit wear and tear. Replace bits with better quality as they wear out. I buy 1 3/4" bits often as they are used for fish mouthing DOM tubing, and get at least 6+ cuts, in a jig mounted to the drill press, so I don't use the center bit, but do use a lot of oil.
https://www.homedepot.com/p/Milwaukee-Hole-Dozer-General-Purpose-Bi-Metal-Hole-Saw-Set-28-Piece-49-22-4185/203113585
« Last Edit: July 02, 2020, 03:01 PM by Peter_C »

Offline Alex

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Re: Hole saws- which one is the best
« Reply #25 on: July 02, 2020, 03:00 PM »
For everything drilling or cutting I always go for Bosch consumables. Drills, bits, hole saws, jigsaw blades, sawsall blades, Bosch never lets me down.

Offline AstroKeith

  • Posts: 207
Re: Hole saws- which one is the best
« Reply #26 on: July 02, 2020, 03:21 PM »
Another vote for Bosch! I had a few odd Bosch hole saws but last year bought a set as it was on offer. They are the bimetal kind on a really effective quick change auger (powerchange). They have stayed sharp despite some hard use. Clean holes.They are labelled as 'progressor' as they have a progressive tooth design, whatever that is. Supposed to be good at chip removal. However this is their one weakness - in most hardwoods they do clog and bind if you are not careful. I've developed a technique to cope which is easy on a drill press but not so easy handheld.
Retired engineer/scientist

Offline Michael Kellough

  • Posts: 5265
Re: Hole saws- which one is the best
« Reply #27 on: July 02, 2020, 04:21 PM »
Don’t get these thin shell Spider carbide hole saws.

The shell is too thin. When the tooth hits a knot the shell distorts(bends even) and the saw becomes oval. The it either creates too much friction or cuts a larger than specified hole.

They do cut extremely fast, until they deform.

Online Cheese

  • Posts: 8757
Re: Hole saws- which one is the best
« Reply #28 on: July 02, 2020, 04:38 PM »
I have a collection of Milwaukee hole saws that go from 5/8" to 6" and span at least 20+ years. Besides wood I use them on aluminum, copper, plastic & rubber. The only issue I've had is getting the wooden plug out of the hole saw.




Here's one that's been used so much that all of the paint is worn away, but it's still sharp.


Offline Frank-Jan

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Re: Hole saws- which one is the best
« Reply #29 on: July 02, 2020, 04:44 PM »
I use both the profit holesaws as the bosch bimetal holesaws depending on the material. When I got a few of the bosch quickchange holesaws I ordered a bunch of the adapters to make the standard holesaws I already had work with the quickchange chuck, and then I even made a systainer-insert for my holesaws (just drilling holes the size of the adapter made that easier.

The pro-fit saws work great on mdf, (on wood aswell, much less strain on the drill, but they leave a slightly more ragety edge) the bimetal saws teeth fill up fast, and I need to clean the teeth a lot to prevent burning otherwise.
I also tried the pro-fit saws on brick, and with the right centre-drill it works very well (better than I expected)

Offline Jiggy Joiner

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Re: Hole saws- which one is the best
« Reply #30 on: July 02, 2020, 05:23 PM »
Most of my hole saws are Bosch, no complaints.

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Offline six-point socket II

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Re: Hole saws- which one is the best
« Reply #31 on: July 02, 2020, 09:30 PM »
Hey Seth,

The one tooth (small diameter), or three teeth (larger diameters) carbide hole saws can absolutely do clean cuts. It's only crucial that they are up to speed before they make contact with whatever you want to cut. For this I prefer a center/pilot drill bit that protrudes the hole saw quite a bit. (Of course this only applies to/works with through holes)

It's a steep learning curve, once you anticipate/expect the "recoil" correctly - the cuts are perfect.

Another big advantage is that they won't cake as much, especially on MDF (and materials that use MDF as base/backing material), like the Bi-Metal ones. Because chips/shavings are much easier removed.

I also have used carbide hole saws that offer as many teeth as BIM do, they are a little harder to control and demand quite a bit of the drill that is used to power them. The results are not per se cleaner than those achieved with the one/three tooth/teeth carbide hole saws.

I only use BIM on sheet metal. Be aware that Bosch offers "progressor type" carbide hole saws now also, these are, according to my sources, of questionable quality and don't live up to the expected life span/number of holes you'd expect from carbide tools. I have not used them myself, because I also had mixed results with the newer carbide consumables. (This does not affect the mentioned "Endurance for Multi Construction, these are older/ a long standing quality product)

Additionally I do keep one of those multi diameter, sheet metal type hole saws around, that's sometimes useful for light use.

My experience with Bosch lies with what they used to call "Endurance for Multi Construction" over here in Europe, they were absolutely worth buying. I have no idea if that is what they call "Daredevil" in the U.S. . The available quick change adapters are another plus. When buying, ask for the newest version, the older one had trouble locking the pilot drill bit. Also the hole enlargement quick change adapter is worth if look, if you do retro-fits. (You can use a smaller hole saw for piloting with it.)

Another brand I have had great results with is MPS from Germany, but their hole saws are third party buyout products (Manufactured in/ COO: CHN).

Kind regards,
Oliver
Kind regards,
Oliver

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Online Cheese

  • Posts: 8757
Re: Hole saws- which one is the best
« Reply #32 on: July 02, 2020, 11:49 PM »
Reviving this topic.

If you're exclusively cutting metal, some annular cutters would be a better choice. These are better than a traditional drill because they need to remove less material, in the same way that hole saws only cut the periphery of the hole.

There are small diameter ones for use with a conventional cordless drill and larger ones for use with equipment that will accept Weldon shanks.




Offline SRSemenza

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Re: Hole saws- which one is the best
« Reply #33 on: July 03, 2020, 01:06 AM »
Reviving this topic.

If you're exclusively cutting metal, some annular cutters would be a better choice. These are better than a traditional drill because they need to remove less material, in the same way that hole saws only cut the periphery of the hole.

There are small diameter ones for use with a conventional cordless drill and larger ones for use with equipment that will accept Weldon shanks.




No, almost exclusively wood.

Seth

Offline Tom Gensmer

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Re: Hole saws- which one is the best
« Reply #34 on: July 05, 2020, 11:31 AM »
Reviving this topic. I am looking for a large set. Something on the order of the Milwaukee 28 pc or the Lenox 21 pc.  Cutting mostly solid and sheet goods.

I would prefer carbide ( I have one Lenox high tooth count carbide). But can't find any large sets and building one up of individuals becomes costly. I am not going to be cutting a lot of holes so how well do the Bi-Metal hold up? I have a couple that seem to fine after a few holes each. But how about on metal should it ever come up?

I have never used the one to three tooth saws. I think I will want cleaner cuts.  One thing about them is that @Tom Gensmer  said they bind less. It looks to me that that single or triple large tooth would catch / bind more than a higher tooth count?

Looking for input on the current brands / selections.


Seth

Hi Seth! Much like a band saw blade, the wider kerf of the low-tooth carbide tipped hole saws means the body of the tool is less likely to bind in the cut. That being said, I tend to only have a handful of these, typically a 2-9/16" and a 4-1/4".

Beyond that, I tend to acquire good-quality bi-metal hole saws (usually Milwaukee). Depending on cost I've had them resharpened for less than the cost of new.
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Offline rvieceli

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« Last Edit: July 13, 2020, 01:13 PM by rvieceli »

Online Cheese

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Re: Hole saws- which one is the best
« Reply #36 on: July 13, 2020, 01:24 PM »
Hey Seth Home Depot has some seemingly good pricing on the Milwaukee hole saw kits TODAY 7/13. It’s the special buy of the day. So today only.

https://www.homedepot.com/s/milwaukee%2520hole%2520saw%2520kit?searchtype=suggest&NCNI-5

https://www.homedepot.com/p/Milwaukee-Hole-Dozer-General-Purpose-Bi-Metal-Hole-Saw-Set-28-Piece-49-22-4185/203113585

https://www.homedepot.com/p/Milwaukee-Hole-Dozer-General-Purpose-Bi-Metal-Hole-Saw-Set-20-Piece-49-22-4170/305966971

Those Hole Dozer blades are a lot easier to remove the wooden plug. That's the one thing I hate about hole saws.  [mad]

Offline SRSemenza

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« Last Edit: August 23, 2020, 12:51 AM by SRSemenza »

Offline Svar

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Re: Hole saws- which one is the best
« Reply #38 on: July 13, 2020, 01:38 PM »
Those Hole Dozer blades are a lot easier to remove the wooden plug. That's the one thing I hate about hole saws.  [mad]
What's different about them? Geometry or access holes?

Offline rst

  • Posts: 2655
Re: Hole saws- which one is the best
« Reply #39 on: July 13, 2020, 01:39 PM »
I've been using that 28 pc set for a couple years now, cut plastic, wood, steel and aluminum.  It's great, still haven't gotten around to putting into systainer however.

Offline rvieceli

  • Posts: 1491
Re: Hole saws- which one is the best
« Reply #40 on: July 13, 2020, 02:38 PM »
you gotta love algorithm based dynamic pricing.    [huh]

the 28 piece set is now $40 dollars cheaper at ZORO. Most of the other sets are about the same BUT the 15 piece set is now $360 dollars HIGHER at ZORO. 449 vs 89 at HD  [eek]

Ron

Offline SRSemenza

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Re: Hole saws- which one is the best
« Reply #41 on: July 13, 2020, 02:54 PM »
you gotta love algorithm based dynamic pricing.    [huh]

the 28 piece set is now $40 dollars cheaper at ZORO. Most of the other sets are about the same BUT the 15 piece set is now $360 dollars HIGHER at ZORO. 449 vs 89 at HD  [eek]

Ron

Yes, $40 not $30.


Seth
« Last Edit: August 23, 2020, 12:50 AM by SRSemenza »

Online Cheese

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Re: Hole saws- which one is the best
« Reply #42 on: July 13, 2020, 04:04 PM »
What's different about them? Geometry or access holes?

Access holes, the early models had 3 narrow slots that a standard screwdriver wouldn't fit thru.


Offline ear3

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Re: Hole saws- which one is the best
« Reply #43 on: July 16, 2020, 03:13 PM »
Thanks guys for liberating more money from my wallet.

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Offline rst

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Re: Hole saws- which one is the best
« Reply #44 on: July 16, 2020, 03:59 PM »
He who dies with the most toys wins... [wink]

Offline SRSemenza

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Re: Hole saws- which one is the best
« Reply #45 on: August 08, 2020, 12:14 PM »
Sooooooo.....

           I ended up going with Lenox over the Milwaukee. Reviews , videos, my own use of a couple older Lenox and Milwaukee indicated that they were very close.  I wanted to be able to cut fairly precise, clean holes and disks. The Lenox being roughly twice the price of the Milwaukee it was a tough call without first hand knowledge.

          I decided to buy an individual 2 3/4"  saw from each since neither set included that size and try them myself. Anecdotal and non- scientific but it did the job on making my decision and I am glad I did my own testing. I used the PDC and cut several holes in 3/4" veneer plywood and solid poplar. I did not try them in metal. I didn't have any to test on and wood is my primary use.

    Both are quite good. And I don't think either brand would disappoint for general purpose use.

        The Milwaukee grabbed more than the Lenox. It seemed to take more downward force to get it to cut and also much more gentle rocking than the Lenox. I was able to easily cut holes without rocking the Lenox at all.

         The Lenox holes were more precise in size than the Milwaukee (even if I didn't rock the Milwaukee). Lenox holes were generally within 1/64th" of the correct size. Which I later confirmed with several different sizes after choosing to keep the Lenox. The Milwaukee holes were often 1/32" - 1/16" too large. Use in a drill press would probably halve those numbers.

        The Milwaukee ejected saw dust clearing the hole much better, which is a good thing, but in the end didn't seem to actually help the results. And the Milwaukee teeth clogged more.

       I suspect the Milwaukee tooth design would do better if hitting nails. It  appears to be quite sturdy. And may be better suited to construction lumber in general. I don't know I didn't do a comparison on those.

   
   In the end I decided the Lenox would serve me better.  The above makes it seem like it is a clear winner ( for me it is) but the Milwaukee is very good as well. I would not hesitate to buy the Milwaukee, especially at half the price, if my intended purpose was more general purpose and less woodworking. It isn't like the Milwaukee didn't cut well, just not as good in my own testing.


Seth

         


         

         
« Last Edit: August 23, 2020, 12:49 AM by SRSemenza »

Re: Hole saws- which one is the best
« Reply #46 on: August 29, 2020, 11:22 PM »
Did you go for carbide tipped or bi-metal?  I have the big daddy bi-metal set and love them. 

Offline SRSemenza

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Re: Hole saws- which one is the best
« Reply #47 on: August 30, 2020, 12:16 AM »
Did you go for carbide tipped or bi-metal?  I have the big daddy bi-metal set and love them.

The Bi-metal Big Daddy set.  And I have started filling in other sizes too. I have used several so far and I really like them.

Seth

Re: Hole saws- which one is the best
« Reply #48 on: August 30, 2020, 01:49 PM »
Did you go for carbide tipped or bi-metal?  I have the big daddy bi-metal set and love them.

The Bi-metal Big Daddy set.  And I have started filling in other sizes too. I have used several so far and I really like them.

Seth

Curious if you'll do anything fancy for how you'll store them or just loose?  The kit is convenient but once you start filling other sizes like you mention they don't nest the same, so I have others that just sit outside the kit.  I'm not really bought into Systainers other than what the tools come in as I'm hobby/shop based so the most my tools move is to my in-laws acreage to do work there and they come right back.  The cost of outfitting Systainers goes a long way to other tools when I don't need portability so much. But still curious if you're storing everything together in something, systainer or otherwise.

-Zach

Offline Peter_C

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Re: Hole saws- which one is the best
« Reply #49 on: August 30, 2020, 02:14 PM »
Curious if you'll do anything fancy for how you'll store them or just loose?  The kit is convenient but once you start filling other sizes like you mention they don't nest the same, so I have others that just sit outside the kit.  I'm not really bought into Systainers other than what the tools come in as I'm hobby/shop based so the most my tools move is to my in-laws acreage to do work there and they come right back.  The cost of outfitting Systainers goes a long way to other tools when I don't need portability so much. But still curious if you're storing everything together in something, systainer or otherwise.

-Zach
There is a point that a full size tool box is the best storage solution. I can not imagine how many Systainer's it would take to hold hand tools...at least for me. At the least cabinets with drawers to mimic a tool box, but wood drawers just can't handle the same amount of weight as a metal tool box.

Edit: In thinking about it, I have forgotten how many "red" blow molded plastic boxes I have thrown away to pack the contents into a tool box for space efficiency. Often even my construction blow molded tool boxes get tossed in favor of a tool box system IE: Ridgid, or Milwaukee Packout tool boxes, that can hold more than one tool type.
« Last Edit: August 30, 2020, 02:21 PM by Peter_C »

Offline SRSemenza

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Re: Hole saws- which one is the best
« Reply #50 on: August 30, 2020, 04:26 PM »
I will be storing them in a tool chest drawer. For the work I do I won't need the full set to be portable. If I need them on site I will know what the cutting will be ahead of time and take a small range of sizes to take with me.  When I get the drawer together I will post pictures.

Seth

Online Cheese

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Re: Hole saws- which one is the best
« Reply #51 on: August 31, 2020, 01:27 AM »
I just store them nested into 2 groups. Because of their similarity incrementally in sizing, it works well and saves space.







Offline SRSemenza

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Re: Hole saws- which one is the best
« Reply #52 on: August 31, 2020, 02:52 PM »
Anyone know what arbor I need in order to have enough thread space to screw two hole saws on to the same arbor for enlarging holes? None of the ones in the set I bought will work.

Seth

Offline cubevandude

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Re: Hole saws- which one is the best
« Reply #53 on: September 03, 2020, 05:33 PM »
I've never seen anything that will work that way.  Drill the hole size you want in a scrap pc of wood, then clamp it over the other hole and use it as a guide.

Offline RJNeal

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Re: Hole saws- which one is the best
« Reply #54 on: September 03, 2020, 05:38 PM »
Seth, I remember seeing them for sale. I thought they were call whoops bits or something like that. I didn’t lee valley or Garrett wade have them?
I always wanted one of those darn things.
Have you walked your saw today?

Online Cheese

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Re: Hole saws- which one is the best
« Reply #55 on: September 03, 2020, 05:46 PM »
Oops arbor sold by Starrett. An arbor with concentric threads. A 1/2-20 and a 5/8-18 thread.

Offline RJNeal

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Re: Hole saws- which one is the best
« Reply #56 on: September 03, 2020, 06:06 PM »
Thanks Cheese man.
Have you walked your saw today?

Offline Peter_C

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Re: Hole saws- which one is the best
« Reply #57 on: September 03, 2020, 06:40 PM »
I've never seen anything that will work that way.  Drill the hole size you want in a scrap pc of wood, then clamp it over the other hole and use it as a guide.
I do it another way. I screw or clamp a piece of wood to the backside, then drill the hole normally. Just need something to keep the guide bit centered.

Online Cheese

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Re: Hole saws- which one is the best
« Reply #58 on: September 04, 2020, 01:02 AM »
Thanks Cheese man.

https://www.starrett.com/metrology/product-detail/KA19-N

They are pretty slick...in the 15 years or more that I've owned one, I've used it about 6-10 times. As others have noted there are work-arounds, however, for the small amount of space it takes up amongst the hole saws and for the few $$ it costs it's a great option to have.

They appear to be pretty goofy looking but they do make sense because they are so simple. Their only purpose is to replace the 1/4" diameter pilot drill in the arbor with a hole saw that's then used as the pilot to center the oversize hole saw. There are no extreme loads being put on the Oops arbor as it is only being used as a method to center the undersized hole saw and all of the forces that the larger holesaw incurs is still being directed to the original arbor.

For example L to R:
1 3/8" hole saw with a 5/8-18 internal thread for an arbor.
Standard arbor having a 5/8-18 external thread and a 1/4" pilot drill.
Oops arbor having both 1/2-20 and 5/8-18 external threads.
3/4" hole saw with a 1/2-20 internal thread.




The 1/4" pilot drill is removed so that the Oops arbor can be installed in its place. The Oops arbor will accept hole saws that have both 1/2-20 and 5/8-18 internal threads.




The new enlarged hole saw is threaded onto the original arbor while the original sized hole saw is threaded onto the Oops arbor.




The Oops arbor with the pilot hole saw is inserted into the original arbor which holds the larger holesaw and is secured with the original setscrew.




Holesaw arbors with both 1/2-20 and 5/8-18 external threads can be utilized.

« Last Edit: September 04, 2020, 11:36 AM by Cheese »

Offline SRSemenza

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Re: Hole saws- which one is the best
« Reply #59 on: September 04, 2020, 11:36 AM »
Yup, that's it. Oops arbor.     I think I have also seen that some regular arbors have just enough thread length to hold two saws.  But the Starret looks like a much better option.

Thanks,

          Seth

Offline Michael Kellough

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Re: Hole saws- which one is the best
« Reply #60 on: September 04, 2020, 12:35 PM »

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Offline TinyShop

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Re: Hole saws- which one is the best
« Reply #62 on: September 05, 2020, 04:54 AM »
I'm surprised no one has suggested an adjustable circle cutter:



https://www.starminfo.com/en/product/jizai/36t.html

Assuming there's no need to work in a tight space, seems a circle cutter offers all kinds of versatility. Plus, there's the option of HSS, carbide or even diamond.

Star-M even makes a range of tool-free versions:



What do folks think of a single circle cutter in place of an entire set of holesaws?
« Last Edit: September 05, 2020, 05:27 AM by TinyShop »
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Offline SRSemenza

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Re: Hole saws- which one is the best
« Reply #63 on: September 06, 2020, 12:32 AM »
I'm surprised no one has suggested an adjustable circle cutter:


Assuming there's no need to work in a tight space, seems a circle cutter offers all kinds of versatility. Plus, there's the option of HSS, carbide or even diamond.

Star-M even makes a range of tool-free versions:



What do folks think of a single circle cutter in place of an entire set of holesaws?


 I never used one but they always look like they would be hard to control. Maybe not?

 I think the biggest drawback would be the size. And swing radius. I have already used several of the hole saws I just got near walls and cabinets where that would never have room.

  Can those be used without the center bit (on a drill press)?  If not then they would not work for making round disks without a center hole.

  I also can't imagine the cutter working well on a 90 degree angle head. Might work but seems awkward and maybe even risky to a hand in the wrong place.

 The pro of course is that it is one cutter that can make any size in the range.

        In my case if I had a circle cutter I would still end up with a set of hole saws. But I think it depends on the users intended cutting purpose.



Seth

Offline aloysius

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Re: Hole saws- which one is the best
« Reply #64 on: September 06, 2020, 04:03 AM »
I honestly don't think there's a "best hole-saw".  Just the best for the job.  Working at a remote location (250 KM from base) I had a series of downlights to install in Hardieflex.  A colleague's holesaw enthusiastically cut exactly 3 holes before it stopped cutting. I then (carefully) managed 7 before mine was too blunt to use.  Both were new & expensive bimetallics:  Sutton & Sandvik from memory.

If we'd been using Carbide gritted saws instead, the saw would've laughed at the task (20 odd lights) & shown virtually no wear at all.  Unfortunately, we weren't aware that we would be drilling fibre cement, & had no access to the "right" material saws.

Yet I've cut 3" holes with the same well-lubed Sandvik bimetallics in structural steel girders!  Slow & steady works well here.

TCT saws seem to work well in synthetic board, yet tend to burn their way through natural hardwood.  A simple auger (<50mm) works best here.  Expanding-wing augers in a simple old-school handbrace can be remarkably effective in hardwood too, but blunt quickly in synthetics.

Diamond gritted saws & cores work best in concrete, masonry & certain softer marble, limestone, sandstone & ceramic tile.  Water is the best lube & cooling medium here.

I've never really found much diff between any of the particular "brands" that I've used over the years, but admittedly they've always been fairly expensive quality brands:  Marcrist, Husqvarna, Lennox, Sandvik/Bahco, Sutton et. al

I've also noted that others seem to try to spin larger holesaws in any material way too fast to cut effectively.  A big, powerful, high-torque power drill or the very best cordless money can buy is needed to turn a large diameter holesaw at the correct (low) speed.  Years ago, that for me was Bobbie Bosch 1500w (2 HP) corded or 36V cordless drills, both fitted with extra-long auxiliary handles for safety.
FOG-wit since '95:  Some say since birth...

Online Cheese

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Re: Hole saws, Starrett Quick Change
« Reply #65 on: September 07, 2020, 11:04 AM »
Here's an interesting quick change system for swapping out different sized hole saws if that's what you're up against.

A Starrett A-6 quick change chuck that's available in hex or SDS drive.
From Starrett:
Fast, tool-free changes between different sizes and types of Hole Saws and Pilot Drills. Provides a simple method for core ejection and hole enlargement. A6 Kwik Change Chuck for use with Hole Saws up to 6"/152mm diameter.






A quick change adapter that's available in 1/2-20 or 5/8-18 to fit all hole saw diameters from 14 to 152 mm.






Just attach the adapter to the required hole saws and with the push of a button you can swap out the holes saws instantly.

« Last Edit: September 07, 2020, 11:14 AM by Cheese »