Author Topic: Domino vs. Leigh FMT  (Read 1179 times)

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Offline HowardH

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Domino vs. Leigh FMT
« on: November 16, 2022, 11:17 AM »
I used to have one of the Leigh machines years ago. I sold it and now exclusively use the Domino.  I was looking at a video of the FMT again and it made me wonder where using an actual mortise and tenon joint could be better than a Domino.  I can think of a decorative through joint where it could be better but simply from a strength perspective, wouldn't the Domino be just as strong?  It's certainly a lot easier.   
Howard H
The Dallas Texas Festool Fanatic!

Mark Twain:  "I didn't attend the funeral, but I sent a letter approving of it." "If you tell the truth you don't have to remember anything."

mft1080, P1cc, MFT/3, T15, TID-18, RO150FEQ, ETS EC 150, MT55cc, RTS400, CT22, CT36E, 800, 1080, 1400, 1900 rails, OF1400, CSX, C18, VacSys, Vecturo, Domino, Qwas dogs, Parf Dogs, Zobo's, Syslite Uni, CMS GE, Sawstop contractor, PM 1500, Jet J/P, FS-WA, Shaper Origin. Felder AF-14, TSC 55 KEB, Dash-Board bench system

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Offline ChuckS

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Re: Domino vs. Leigh FMT
« Reply #1 on: November 16, 2022, 12:03 PM »
If you make your own decorative tenons rather than using the stock dominoes, the through tenon issues should disappear.



As for strengths, double and twin Dominoes offer great structural integrity. Many use the DF500 and DF700 to build chairs, tables and doors, depending on their sizes.

Fine Woodworking did a test on joints years ago, covering the Dominoes as well:
« Last Edit: November 16, 2022, 12:06 PM by ChuckS »

Offline jeffinsgf

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Re: Domino vs. Leigh FMT
« Reply #2 on: November 16, 2022, 01:04 PM »
I'm going to second Chuck's comment. The Domino is perfectly capable of through joinery. I did through mortises for a slat shelf in a pair of coffee tables I built. Making the padauk tenon stock may have been the most satisfying part of the whole project. It took a couple runs at it, but I eventually came up with a thickness, width and radius combination that was a piston fit in the Domino mortise.

« Last Edit: November 16, 2022, 03:40 PM by jeffinsgf »

Offline Michael Kellough

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Re: Domino vs. Leigh FMT
« Reply #3 on: November 16, 2022, 01:27 PM »
@jeffinsgf Beautiful table! Did you design it too?

I love Paduak, gorgeous wood and it smells delicious when milled.

Since Domino’s are metric, did you find a metric bullnose router bit or did you have to do something more complicated?

Offline jeffinsgf

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Re: Domino vs. Leigh FMT
« Reply #4 on: November 16, 2022, 03:57 PM »
Thanks, Michael. The design is mine, but I took inspiration from several Danish modern designers from the 60s and 70s in what was at the time termed "surf board coffee tables". It's amazing to look at these pictures from when they were just finished. They're so much darker now.

Though I tried, I was not able to find metric radius or bull nose bits here in the states. I suppose I could have tried harder or ordered them from Europe, but before I did either, I tried a 1/8" radius bit on 6mm thick stock, crowded it until the shoulder was just right at the surface of the material and mashed the material down hard with featherboards. Between pushing the limits of the cut and the slightly oversized cut of the Domino, .25 and .236 appeared to be pretty darn close.

Offline Cheese

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Re: Domino vs. Leigh FMT
« Reply #5 on: November 16, 2022, 04:43 PM »
Very nice looking table Jeff...I really like the exposed Dominos they add a lot to the overall design. They put an exclamation point on the table.  [smile]

FWIW...Festool offers a 3mm radius insert router bit if you need that for a future project.

https://www.festoolusa.com/accessory/499808---s8-hw-r3-d28-kl12,7ofk#Overview

Offline luvmytoolz

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Re: Domino vs. Leigh FMT
« Reply #6 on: November 16, 2022, 05:03 PM »
Outstanding job, the table looks absolutely beautiful! I love the deep richness of it!

Offline HowardH

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Re: Domino vs. Leigh FMT
« Reply #7 on: November 16, 2022, 05:21 PM »
It says its for the MFK 700.  Would it also work in a 1010?
Howard H
The Dallas Texas Festool Fanatic!

Mark Twain:  "I didn't attend the funeral, but I sent a letter approving of it." "If you tell the truth you don't have to remember anything."

mft1080, P1cc, MFT/3, T15, TID-18, RO150FEQ, ETS EC 150, MT55cc, RTS400, CT22, CT36E, 800, 1080, 1400, 1900 rails, OF1400, CSX, C18, VacSys, Vecturo, Domino, Qwas dogs, Parf Dogs, Zobo's, Syslite Uni, CMS GE, Sawstop contractor, PM 1500, Jet J/P, FS-WA, Shaper Origin. Felder AF-14, TSC 55 KEB, Dash-Board bench system

Offline Cheese

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Re: Domino vs. Leigh FMT
« Reply #8 on: November 16, 2022, 05:34 PM »
It says its for the MFK 700.  Would it also work in a 1010?

Absolutely, I use both the 1 mm & 1.5 mm bits in my 1010.  With 4 edge changes they'll go forever.

Offline Lincoln

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Re: Domino vs. Leigh FMT
« Reply #9 on: November 16, 2022, 05:40 PM »
Great looking table, very nicely done. How do you find the Walko that I can see in the background? I have the #4 and love it. A #3 just came up on Marketplace, down here in Aus, and if I had more room I'd grab it.

Offline jeffinsgf

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Re: Domino vs. Leigh FMT
« Reply #10 on: November 17, 2022, 08:06 AM »
Great looking table, very nicely done. How do you find the Walko that I can see in the background? I have the #4 and love it. A #3 just came up on Marketplace, down here in Aus, and if I had more room I'd grab it.

I have both a #4 and a #3 Walko with all the accessories and I love them. At one point in time I was considering importing and selling them. My #4 is my "go to" full sheet cutting platform. I unfold it and set it on a pair of saw horses. As you can see in the photo, the #3 is a perfect outfeed table for my vintage Craftsman table saw. Shame they never received the distribution and acclaim they deserve.

Offline jeffinsgf

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Re: Domino vs. Leigh FMT
« Reply #11 on: November 17, 2022, 08:26 AM »
It says its for the MFK 700.  Would it also work in a 1010?

Absolutely, I use both the 1 mm & 1.5 mm bits in my 1010.  With 4 edge changes they'll go forever.

Am I looking at this right? Do all the various radius cutters fit on the same shank?

Offline Chris Wong

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Re: Domino vs. Leigh FMT
« Reply #12 on: November 17, 2022, 07:17 PM »
I don't have an FMT, so I may be wrong, but... the FMT offers more options of sizes for mortises and tenons, including longer tenons  in smaller sizes. Also, a Domino tenon will often have a different expansion/contraction rate than the materials it's glued into so may fail before a machined tenon. In some extreme situations or after enough time, I think a floating tenon will fail before a machined tenon. But from a practical point, I don't see a significant difference.
Chris Wong, http://FlairWoodworks.com and https://www.ultimatetools.ca/
First Festool was a free pencil.
Shipping live-edge cribbage boards around the world since 2010.

Offline HowardH

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Re: Domino vs. Leigh FMT
« Reply #13 on: November 18, 2022, 10:26 AM »
I don't have an FMT, so I may be wrong, but... the FMT offers more options of sizes for mortises and tenons, including longer tenons  in smaller sizes. Also, a Domino tenon will often have a different expansion/contraction rate than the materials it's glued into so may fail before a machined tenon. In some extreme situations or after enough time, I think a floating tenon will fail before a machined tenon. But from a practical point, I don't see a significant difference.

The biggest benefit in favor of the Domino is time.  In a production environment, the time savings and thus efficiencies would be significant.
Howard H
The Dallas Texas Festool Fanatic!

Mark Twain:  "I didn't attend the funeral, but I sent a letter approving of it." "If you tell the truth you don't have to remember anything."

mft1080, P1cc, MFT/3, T15, TID-18, RO150FEQ, ETS EC 150, MT55cc, RTS400, CT22, CT36E, 800, 1080, 1400, 1900 rails, OF1400, CSX, C18, VacSys, Vecturo, Domino, Qwas dogs, Parf Dogs, Zobo's, Syslite Uni, CMS GE, Sawstop contractor, PM 1500, Jet J/P, FS-WA, Shaper Origin. Felder AF-14, TSC 55 KEB, Dash-Board bench system

Offline Chris Wong

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Re: Domino vs. Leigh FMT
« Reply #14 on: November 18, 2022, 10:43 AM »
If somebody wanted to do a comparison test in a short period of time, I'd probably make a joint with 5x20mm Domino and same-size cut mortise and tenon, join them with PVA glue and throw it in the dishwasher for a number of cycles to try to make one fail.
Chris Wong, http://FlairWoodworks.com and https://www.ultimatetools.ca/
First Festool was a free pencil.
Shipping live-edge cribbage boards around the world since 2010.