Author Topic: CMT Domino cutters  (Read 8724 times)

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Offline ear3

  • Posts: 4048
CMT Domino cutters
« on: April 22, 2016, 07:30 PM »
I just noticed that CMT makes cutters for both the Domino machines, which come in at a little more than half the price of Festool cutters.  Anyone try these?

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Offline tjbnwi

  • Posts: 6257
  • Cedar Tucky Indiana
Re: CMT Domino cutters
« Reply #1 on: April 22, 2016, 09:00 PM »
They're my go to. Very nice cutters.

Tom

Offline c_dwyer

  • Posts: 160
Re: CMT Domino cutters
« Reply #2 on: April 22, 2016, 09:01 PM »
Ed:
I bought two for a 700 a few months ago, but unfortunately haven't tried them yet. I certainly can't tell the difference between the CMT and the Festool bit from looking at them, except for the markings on the bits themselves.  There was a previous thread on here a year or so ago with a little more info from users who provided info that pointed me in the CMT direction.

Offline Beaudreaux JC

  • Posts: 15
Re: CMT Domino cutters
« Reply #3 on: April 22, 2016, 09:05 PM »
I've used them in various sizes extensively. After nearly 500 domino cuts, I find that they cut just as cleanly as the Festool ones. No regrets whatsoever in my purchases, and I've saved considerably buying the CMT cutters vs the original ones.

Offline sylthecru

  • Posts: 47
Re: CMT Domino cutters
« Reply #4 on: April 23, 2016, 08:31 AM »
I agree on the cmt domino bits, I only buy the Festool bits if I am in a bind and need a replacement ASAP.
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Offline John Bates

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Re: CMT Domino cutters
« Reply #5 on: April 23, 2016, 02:17 PM »
They also do a collet extension for routers that is a very attractive price, their bits for the Mafell Duo Doweler are worth looking at if you have the machine. If anyone wants a price in the UK let me know.
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Offline Drich

  • Posts: 198
Re: CMT Domino cutters
« Reply #6 on: April 23, 2016, 02:44 PM »
That is good to know as I just got a 700 and need a few more bits. I did buy the Seneca adaptor and it works great. Best of both worlds.

Offline spyle

  • Posts: 4
Re: CMT Domino cutters
« Reply #7 on: April 27, 2016, 03:12 PM »
Maxprod.com is starting to stock the CMT cutters.  You can find them here:  www.maxprod.com/prodcat/FES-H62.asp  Please be patient as we get our inventory built up.  They keep selling ot as fast as they come in.

Offline Ripit

  • Posts: 21
Re: CMT Domino cutters
« Reply #8 on: March 11, 2018, 09:26 PM »
Bump.....

 @Drich hows that seneca adapter working out - any issues? Any problem with the mechanics the 700, there have been some recent postings that there may be an issue with the adapter and the gearbox.

Thanks

Offline Drich

  • Posts: 198
Re: CMT Domino cutters
« Reply #9 on: March 11, 2018, 10:50 PM »
It worked out fine for me. I did end up selling it and going with the 500 as it was just to big for the 3/4 inch work I was mostly doing.

Offline ear3

  • Posts: 4048
Re: CMT Domino cutters
« Reply #10 on: March 12, 2018, 08:58 AM »
Since this thread got bumped I would just note some dissatisfaction I have with the D10 CMT cutter for the Domino XL.  It cuts the mortises a hair larger than the Festool D10 cutter on my DF500.  Not enough to make it useless, but definitely noticeable.
Kapex KS 120 w/UG Cart and Extensions • CXS Set • T18+3 w/Centrotec Installer's Set • PDC 18/4 • TS 75 • TSC 55 • HKC 55 w/250, 420 and 670 FSK rails • Carvex 420 w/Accessory Kit • Domino 500 Set • Domino 700 XL • OF 2200 w/Base Accessory Kit • OF 1400 • OF 1010 • MFK 700 EQ Set • LR 32 • MFS 400 w/2000, 1000, and 700 extensions • Rotex 90 • Rotex 150 • LS 130 • ETS-EC 150/5 • ETS-EC 150/3 • Pro 5 LTD • RTS 400 • RAS 115.04 • RS 2 • HL 850 • Vecturo OS 400 • AGC 18-115 • CT 26 w/BT module • CT Sys w/Long-Life Bag • MFT/3

Offline ben_r_

  • Posts: 1308
Re: CMT Domino cutters
« Reply #11 on: March 12, 2018, 03:32 PM »
I did not know about these, but the reviews arent looking great on them so far...
If at first you don't succeed, redefine success!

Offline JimD

  • Posts: 452
Re: CMT Domino cutters
« Reply #12 on: August 25, 2019, 04:57 PM »
I bought a very lightly used Domino 700 last week and bought 5mm, 6mm, 8mm, 10mm, and 14mm CMT cutters from Amazon and a Seneca adapter from Seneca (Amazon was out of the adapter).  On the second cut today, the 14mm cutter broke.  Fortunately Amazon is great on returns, they are sending the replacement and all I have to do is take the broken one to a UPS store for them to return it.  But I was very unpleasantly surprised it broke.  I didn't plunge it quickly.  I was cutting hard maple but that should not break carbide.  I will update after the new cutter arrives and I give it a try.  I am making a crib and need to make a lot of 14mm mortises so I will get a chance to exercise the replacement.  If the replacement breaks I guess I will have to bite the bullet and buy a Festool. 

I've never had a problem with a CMT blade or router bit.  Hopefully this was just one bad cutter and not typical.  I

My replacement 14mm CMT cutter arrived from Amazon yesterday and I got a chance to use it a few minutes ago.  I am happy to report it works great!  I used it to successfully cut slot mortises in hard maple.  6 of the mortises are over 5 inches long and two are over 3 inches long.  All are over 1.5 inches deep.  No issues.  Cutter works fine.

Seems like the bottom line is CMT occasionally makes a bad one but their cutters work - for a lot lower price.  I will probably test my other cutters this weekend to make sure none of them are "bad ones". 
« Last Edit: August 29, 2019, 06:50 PM by JimD »

Offline ben_r_

  • Posts: 1308
Re: CMT Domino cutters
« Reply #13 on: August 25, 2019, 05:14 PM »
Wow, over a year later its not looking like the reviews are that great. I wonder what theyre doing wrong. CMT should know how to make a solid product.
If at first you don't succeed, redefine success!

Offline JimD

  • Posts: 452
Re: CMT Domino cutters
« Reply #14 on: September 03, 2019, 07:58 AM »
I purchased 5, 6, 8, 10, and 14mm CMT cutters from Amazon after buying a Domino XL.  The 14mm broke on the second cut, as I posted earlier.  The replacement cut a series of 6 inch long 40mm deep mortises in hard maple, however, and is still going strong.  Last night I make a test block out of a scrap of oak newel post using all my cutters in both standard and the wider width.  I am happy to report all the cutters worked fine.  I plunged the XL cutters to 40mm and the little ones to 25mm. 

So I think my experience with the first 14mm cutter was just a bad bit, something that happens, especially with really hard metal.  Hard has a strong tendency to mean brittle so it only takes a small unnoticed crack and the tip breaks off. 

Offline jobsworth

  • Posts: 6197
  • Festool Baby.....
Re: CMT Domino cutters
« Reply #15 on: September 03, 2019, 10:52 PM »
I got the 8mm for my 700 from CMT, cant tell the difference between it and the Festool bits

Offline Mike Goetzke

  • Posts: 548
Re: CMT Domino cutters
« Reply #16 on: January 16, 2020, 04:41 PM »
I know this thread is a bit old but couple weekends I was cutting quite a few 6mm mortises (CMT bit, XL, and Seneca adapter) and found the tenons were pretty loose. The tenons were pretty much right at 6.0mm but the slots were about 6.15mm. I made sure the faces of all the components being tightened were nice and clean.

I've always remembered the tenons being pretty tight. I didn't have time to experiment so I put the tenons in a vacuum container with some water that I can attach to my FoodSaver vac. This worked too well so then needed to microwave them a bit.

Do you think I have a bit size issue or is it the tenons and humidity issue?

Offline xedos

  • Posts: 337
Re: CMT Domino cutters
« Reply #17 on: January 16, 2020, 10:29 PM »
Only way to know for sure is to get a Festool 6mm and preform the same operation.

Offline JimD

  • Posts: 452
Re: CMT Domino cutters
« Reply #18 on: January 19, 2020, 03:45 PM »
You could just measure the cutter.  Ideally I'd use a mike.  But if I couldn't find mine, I would use a dial caliper (or digital caliper).  I've used my 6mm CMT cutter and it worked fine but I used home made dominos so I can't really comment on the size of the mortises. 

Offline SolCalKid

  • Posts: 3
Re: CMT Domino cutters
« Reply #19 on: January 19, 2020, 06:58 PM »
I used the CMT Domino cutters. As far I am concerned, they are as good as the stock cutters. I make my own tenons though. 

Offline mat

  • Posts: 29
Re: CMT Domino cutters
« Reply #20 on: May 06, 2020, 02:36 AM »
Used the 14mm CMT cutter and found the stock domino loose tenon to be sloppy. It is 14mm and indeed cuts a 14mm mortise but when I check the Festool cutter and mortise it is actually slightly under 14mm.
OK for user made tenons but not for domino stock.
Mat

Offline JimD

  • Posts: 452
Re: CMT Domino cutters
« Reply #21 on: May 16, 2020, 11:51 AM »
I like my CMT cutters but have been a bit concerned about reports of over size mortises with them.  I don't plan to buy domino tenons but would like to have that option if a project requires a bunch of the same size tenons.  So today, I went out and measured my cutters and, crudely, some mortises.

I used dial calipers I keep in the shop that are imperial, not metric.  They read in fractions of an inch or decimal inches.  So I converted to metric using 25.4mm to the inch.  For mortise size, I did not try the calipers but might be able to use them for the largest ones.  What I did was use a large set of drill bits with letter and number size as well as fractional inch size bits to test the mortises in a sample block I made after getting my XL.  It is a cut off from a newel post and is laminated oak (3 layer I think).  That worked best for the 5mm mortise where there were lots of bits about that size but gave some idea through the 12mm mortises made with a festool bit.  My 5mm, 8mm, 10mm, and 14mm cutters are all CMT.

I measured the 5mm at .195 inches or 4.953mm.  a #7 drill bit was snug in the mortise, it is .201 inches or 5.105mm.

I measured the 8mm at .311 inches or 7.899mm.  My .316 inch drill bit was tight, that is 8.026mm.

I measured the 10mm at .392 inches or 9.957mm.  A .397 inch drill bit (10.08mm) was snug.  .4063 (10.32) wouldn't go.

I measured the 12mm at .472 inches or 11.98mm.  A 15/32 bit, .4688 inches or 11.90mm was loose.

I measured the 14mm at .55 inches or 13.97mm.  I have no twist drills close to this.

My calipers only read to .01 inch so the last digit is an estimate.  I could easily be off .001 inches or .025mm.  the drill bits could also be a little off.

So this is somewhat crude but I do not see in my bits a reason to be concerned with Festool tenons fitting.  I also measured the thickness of a festool tenon.  I got .478 for a 12mm, the only size I have.  My home made tenons are about .47 thick and fit fine - snugly - in the 12mm festool cutter made mortises.  .478 is a little more than 12mm but the outside is stamped and they go in fine with light taps of a deadblow.  If smaller size festool tenons are also ~.1mm over their stated thickness the 5mm would be snug in my 5mm CMT cutters mortises. Even if there is .1mm play, they would work fine.  My 12mm tenons have been exposed to the atmosphere for months which may have added the .1mm.

Offline Mike Goetzke

  • Posts: 548
Re: CMT Domino cutters
« Reply #22 on: May 18, 2020, 08:31 AM »
I was also curious since I have a few CMT bits that seemed to be giving slightly loose tenons but not enough for me to worry about. I looked into this a bit and found I must have started to bore the slots too fast. I slowed down a little and tenons are tight again. I mostly use oak and the difference in change in speed was actual audible. Too fast sounded a little choppy and slower very smooth.

Mike

Offline ChuckM

  • Posts: 1769
Re: CMT Domino cutters
« Reply #23 on: May 18, 2020, 09:13 AM »
The majority of users I have observed in person regardless of their experience with the DF make their plunges too fast. You can easily tell from the "chatter" sound they make. Some YouTubers show the same behavior. May be that's the way they have used their routers?

Offline HarveyWildes

  • Posts: 928
Re: CMT Domino cutters
« Reply #24 on: May 18, 2020, 11:24 AM »
The majority of users I have observed in person regardless of their experience with the DF make their plunges too fast. You can easily tell from the "chatter" sound they make. Some YouTubers show the same behavior. May be that's the way they have used their routers?


I did a major slowdown in plunging since I damaged the bottom plate of the Domino 500 body (not the fence) when I was plunging quickly and the cutter caught in the wood, torqued the wood, and did something weird internally to the tool.  Festool fixed it, but I've been very careful to hold both the work piece and the tool securely, and to plunge slowly ever since.


I've not heard of anyone else that has had that problem, so I think it was a combination of factors.  After paying more attention to the sound of my Domino, I would agree with @ChuckM.