Author Topic: Amana 20mm router bit - bench holes  (Read 581 times)

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Offline JonathanJung

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Amana 20mm router bit - bench holes
« on: July 01, 2020, 11:31 AM »
About to mill a few benches with 20mm holes. Anyone used this bit?

https://www.amazon.com/dp/B000P4QCDA/ref=sr_1_38?dchild=1&keywords=festool+20mm&qid=1593616046&sr=8-38

I'm planning on using my LR32 for spacing and layout. See any issues with this?

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Offline Cheese

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Re: Amana 20mm router bit - bench holes
« Reply #1 on: July 01, 2020, 11:51 AM »
I'd call Amana up and ask them what the max rpm is on that bit. Amana claims the bit is for boring machines and drill presses.

Just noticed...Amana also says it's a right hand rotation.

I've used the Festool version 491072 in a OF 1400 with great success.
« Last Edit: July 01, 2020, 11:57 AM by Cheese »

Offline HarveyWildes

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Re: Amana 20mm router bit - bench holes
« Reply #2 on: July 01, 2020, 12:01 PM »
About to mill a few benches with 20mm holes. Anyone used this bit?

https://www.amazon.com/dp/B000P4QCDA/ref=sr_1_38?dchild=1&keywords=festool+20mm&qid=1593616046&sr=8-38

I'm planning on using my LR32 for spacing and layout. See any issues with this?


What router are you going to use with it?


This is a boring bit - does it have a flat on the shank?  If so, is it safe to use in a router?  I notice the Amazon sells it with a 10mm collet, so it seems that Amazon is suggesting it is safe.  They also have a similar bit (#203204) with a thinner diameter on the section between the shank and the cutting head for a few buck less, but I think I would favor this one.


Offline HarveyWildes

  • Posts: 930
Re: Amana 20mm router bit - bench holes
« Reply #3 on: July 01, 2020, 12:08 PM »
I'd call Amana up and ask them what the max rpm is on that bit. Amana claims the bit is for boring machines and drill presses.

Just noticed...Amana also says it's a right hand rotation.

I've used the Festool version 491072 in a OF 1400 with great success.

There is a different part # that is similar and left handed.

Did you notice that you can get a "renewed" version of the Festool bit on Amazon and save a few bucks?  The idea of a refurb router bit seems odd to me - you don't know how it might have been previously used.

Also, the bit has an 8mm shank.  Does Festool make a 1/2" shank version of this bit?  It seems like it might be a better match for a 1400.

Oddly, Freud makes bits that are metric and smaller than 20mm with 1/2" shanks, but the only 20mm bit they make is 1/4" shank.  Amazon has an off-brand 20mm bit with a 1/2" shank for ~$20, but I can't find it now.  There are also some off-brand 20mm bits that are not plunge bits, so not suitable for this application.  CMT makes a solid carbide 20mm bit with a 20mm shank (weird) for ~$180, but they also make a normal two flute bit with a 1/4" shank for ~30.

For routing, I'd go for the Festool bit just for the 8mm shank.  Maybe if I was just buying the bit for one short job, I'd go for the off-brand guy that Amazon sells and see how it does.

If you go the drilling route, I've used and like the bit that comes with the Parf Guide system, which you can buy separately, and the 20mm brad point bit from Lee Valley.
« Last Edit: July 01, 2020, 12:40 PM by HarveyWildes »

Offline derekcohen

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    • In The Woodshop
Re: Amana 20mm router bit - bench holes
« Reply #4 on: July 01, 2020, 12:09 PM »
About to mill a few benches with 20mm holes. Anyone used this bit?

https://www.amazon.com/dp/B000P4QCDA/ref=sr_1_38?dchild=1&keywords=festool+20mm&qid=1593616046&sr=8-38

I'm planning on using my LR32 for spacing and layout. See any issues with this?

Jonathan, you will do far better with a 20mm WoodOwl auger bit (the ones at the rear, below), either in a brace or a cordless drill ...



These will power through dense wood. Five inches of Jarrah ...

https://www.woodworkforums.com/f152/hold-augers-234735


Regards from Perth

Derek
« Last Edit: July 01, 2020, 12:12 PM by derekcohen »

Offline ear3

  • Posts: 4108
Re: Amana 20mm router bit - bench holes
« Reply #5 on: July 01, 2020, 12:18 PM »
Only 8mm shank as far as I know.

I'd call Amana up and ask them what the max rpm is on that bit. Amana claims the bit is for boring machines and drill presses.

Just noticed...Amana also says it's a right hand rotation.

I've used the Festool version 491072 in a OF 1400 with great success.


There is a different part # that is similar and left handed.


Did you notice that you can get a "renewed" version of the Festool bit on Amazon and save a few bucks?  The idea of a refurb router bit seems odd to me - you don't know how it might have been previously used.


Also, the bit has an 8mm shank.  Does Festool make a 1/2" shank version of this bit - seems like it might be a better match for a 1400.
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Offline Cheese

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Re: Amana 20mm router bit - bench holes
« Reply #6 on: July 01, 2020, 01:06 PM »
There is a different part # that is similar and left handed.

Did you notice that you can get a "renewed" version of the Festool bit on Amazon and save a few bucks?  The idea of a refurb router bit seems odd to me - you don't know how it might have been previously used.


Ya I saw the other part number for a LH bit and that's when it clicked. The spindle speed of a boring machine is in the 3000-4000 rpm range as opposed to a 22,000 rpm router.


I'm with you on the renewed version of any router bit. I don't even want to be in the same room if the router bit decides to fracture because of how it was previously used.

Offline Oldwood

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  • Alberta, Canada
Re: Amana 20mm router bit - bench holes
« Reply #7 on: July 01, 2020, 07:05 PM »
I have used that bit in a CNC router for boring holes. I used 6000 rpm and 100 ipm feed but hand cut the feed rate is harder to control so you could slow the rpm even more to insure you don't burn it. I would be very careful using that bit in a handheld router I think they are designed for boring machines. Most routers seem to have a minimum rpm of 10,000 rpm so I think that is too fast for that bit.



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Offline JonathanJung

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Re: Amana 20mm router bit - bench holes
« Reply #8 on: July 23, 2020, 11:01 AM »



What router are you going to use with it?


This is a boring bit - does it have a flat on the shank?  If so, is it safe to use in a router?  I notice the Amazon sells it with a 10mm collet, so it seems that Amazon is suggesting it is safe.  They also have a similar bit (#203204) with a thinner diameter on the section between the shank and the cutting head for a few buck less, but I think I would favor this one.
[/quote]

I'd use the OF1400.

Offline JonathanJung

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Re: Amana 20mm router bit - bench holes
« Reply #9 on: July 23, 2020, 11:03 AM »
I'd call Amana up and ask them what the max rpm is on that bit. Amana claims the bit is for boring machines and drill presses.

Just noticed...Amana also says it's a right hand rotation.

I've used the Festool version 491072 in a OF 1400 with great success.

Seems like ponying up for the Festool might reduce all the Q about speed, rotation, shank dia, bla bla bla. Thank you for your help!

Offline JonathanJung

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Re: Amana 20mm router bit - bench holes
« Reply #10 on: July 23, 2020, 11:06 AM »
About to mill a few benches with 20mm holes. Anyone used this bit?

https://www.amazon.com/dp/B000P4QCDA/ref=sr_1_38?dchild=1&keywords=festool+20mm&qid=1593616046&sr=8-38

I'm planning on using my LR32 for spacing and layout. See any issues with this?

Jonathan, you will do far better with a 20mm WoodOwl auger bit (the ones at the rear, below), either in a brace or a cordless drill ...



These will power through dense wood. Five inches of Jarrah ...

https://www.woodworkforums.com/f152/hold-augers-234735


Regards from Perth

Derek

Woodowls work well, I have them for other things, but drilling 100 at a time seems a bit much.