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Author Topic: Domino cutter size guide.  (Read 1547 times)

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Offline P_Bennett

  • Posts: 11
Domino cutter size guide.
« on: May 02, 2021, 07:00 AM »
Morning one and all,

I’m looking to purchase a domino machine!

but after looking about I was trying to find some information regarding the recommended domino size for the intended application.
I see on the Festool site they state the machines intended use, but is there a rule of thumb or guide that lets you know what thickness or length of domino to use depending on the material type or application?

Im new to the world of woodworking so be gentle

Regards
Paul


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Offline Thompmd

  • Posts: 247
Re: Domino cutter size guide.
« Reply #1 on: May 02, 2021, 07:25 AM »
Great Idea, I’ve not seen one and I hope someone has one they can post.
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Offline Sparktrician

  • Posts: 4160
Re: Domino cutter size guide.
« Reply #2 on: May 02, 2021, 08:13 AM »
The general guidance regarding thickness of dominoes is 1/3 of the thickness of the materials being joined.  For example, 3/4" (18-19 mm) material would get 6 mm dominoes centered in the material.  Length is what you need it to be to get the best/strongest joint without blowout, if close to the edge of the material.   [smile]
- Willy -

  "Show us a man who never makes a mistake and we will show a man who never makes anything. 
  The capacity for occasional blundering is inseparable from the capacity to bring things to pass."

 - Herman Lincoln Wayland (1830-1898)

Offline P_Bennett

  • Posts: 11
Re: Domino cutter size guide.
« Reply #3 on: May 02, 2021, 08:19 AM »
The general guidance regarding thickness of dominoes is 1/3 of the thickness of the materials being joined.  For example, 3/4" (18-19 mm) material would get 6 mm dominoes centered in the material.  Length is what you need it to be to get the best/strongest joint without blowout, if close to the edge of the material.   [smile]
Hi,

Awesome thank you, very much appreciated.


Regards
Paul


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Offline tsmi243

  • Posts: 71
Re: Domino cutter size guide.
« Reply #4 on: May 02, 2021, 09:56 AM »
Basically the 1/3 rule.  Once you have them in hand, it'll be pretty obvious just by looking which one you want to use.

In plywood, I've started dropping down one size, as I read here somewhere.  It works well.  If you cut a 6mm hole in 18mm stock, the material left around that hole isn't super strong.  And a 6mm domino is probably stronger than you really need.  So try a 5mm and see if you prefer that.  Either one will work.

If you're like me, and only really use 2 or 3 material sizes, you'll just remember that 3/4" gets the 5's, and 6/4" gets the 10's.  Something in between would get something in between.  It's pretty easy.


Offline P_Bennett

  • Posts: 11
Re: Domino cutter size guide.
« Reply #5 on: May 02, 2021, 11:46 AM »
Basically the 1/3 rule.  Once you have them in hand, it'll be pretty obvious just by looking which one you want to use.

In plywood, I've started dropping down one size, as I read here somewhere.  It works well.  If you cut a 6mm hole in 18mm stock, the material left around that hole isn't super strong.  And a 6mm domino is probably stronger than you really need.  So try a 5mm and see if you prefer that.  Either one will work.

If you're like me, and only really use 2 or 3 material sizes, you'll just remember that 3/4" gets the 5's, and 6/4" gets the 10's.  Something in between would get something in between.  It's pretty easy.
Great

Thank you for the help!

Regards

Paul


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Offline ChuckM

  • Posts: 2704
Re: Domino cutter size guide.
« Reply #6 on: May 02, 2021, 11:57 AM »
Morning one and all,

I’m looking to purchase a domino machine!
Snip.
Your machine will come with a manual that includes, among other things, the guidelines on domino thickness (reproduced here). The wood you use may affect your choice.

Of course, guidelines can be ignored if you can justify it. One study did find that the joint strength (in hardwood) was much stronger using the 1/3 thickness tenons than 1/2 thickness ones.

I deal with mostly hardwood, and use 8mm dominoes for 3/4" materials by default in wide pieces. For much thicker stock, I go with double tenons (8mm or 10mm, subject to the 1/3 rule).
« Last Edit: May 02, 2021, 12:16 PM by ChuckM »

Offline clark_fork

  • Posts: 300
Re: Domino cutter size guide.
« Reply #7 on: May 02, 2021, 12:06 PM »
This is what helped me when I got started:


Clark Fork

"A lot of people are afraid of heights. Not me, I'm afraid of widths."  Stephen Wright

"straight, smooth and square" Mr. Russell, first day high school shop class-1954

" What's the good of it?" My Sainted Grandmother

"You can't be too rich, too thin or have too many clamps." After my introduction to pocket joinery and now the MFT work process

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don't hesitate to make it beautiful." -- Shaker dictum

Offline P_Bennett

  • Posts: 11
Re: Domino cutter size guide.
« Reply #8 on: May 02, 2021, 12:17 PM »
This is what helped me when I got started:

(Attachment Link)


Thank you for the guide and the images


This will be a great help!



Thank you all gents for your help


Regards

Paul


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Online Birdhunter

  • Posts: 3482
  • Woodworker, Sportsman, Retired
Re: Domino cutter size guide.
« Reply #9 on: May 02, 2021, 03:20 PM »
Halfinchshy and New Brit Workshop both have great videos on using the Domino machines. Watch those, read the Supplemental Manual, and practice on scrap before using on valuable wood.
Birdhunter

Offline P_Bennett

  • Posts: 11
Re: Domino cutter size guide.
« Reply #10 on: May 02, 2021, 03:41 PM »
Halfinchshy and New Brit Workshop both have great videos on using the Domino machines. Watch those, read the Supplemental Manual, and practice on scrap before using on valuable wood.
Awesome thank you fella


Regards

Paul


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Offline Cheese

  • Posts: 8581
Re: Domino cutter size guide.
« Reply #11 on: May 02, 2021, 05:19 PM »
Here's some general Festool recommendations.




Offline P_Bennett

  • Posts: 11
Re: Domino cutter size guide.
« Reply #12 on: May 03, 2021, 03:34 AM »
Here's some general Festool recommendations.

(Attachment Link)

(Attachment Link)
Hi

This is awesome!


Thank you one and all for your help and advice



Regards

Paul


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Offline rst

  • Posts: 2619
Re: Domino cutter size guide.
« Reply #13 on: May 03, 2021, 09:37 AM »
As rule I stick to the 1/3 quideline, that being said...I have a small house that we have added onto. A 24 x 36 original bungalow that my wife's off the boat Polish grandparents built in the early 1920s.  All my selfmade trim is quater sawn red oak.  I've been using 6mm dominoes with no issues.  Join my baseboard with 45s and dominoes and also the 45s on my wndow trim.

Offline Bert Vanderveen

  • Posts: 803
Re: Domino cutter size guide.
« Reply #14 on: May 03, 2021, 11:25 AM »
The
Domino_DF_500 supplemental manual
is a good source for the information you seek.


Also: if you use dominoes with plywood you should aim to keep at least one full ply down and under untouched.
Cheers, Bert Vanderveen

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Offline P_Bennett

  • Posts: 11
Re: Domino cutter size guide.
« Reply #15 on: May 03, 2021, 12:55 PM »
As rule I stick to the 1/3 quideline, that being said...I have a small house that we have added onto. A 24 x 36 original bungalow that my wife's off the boat Polish grandparents built in the early 1920s.  All my selfmade trim is quater sawn red oak.  I've been using 6mm dominoes with no issues.  Join my baseboard with 45s and dominoes and also the 45s on my wndow trim.
Hi

Great thank you


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Offline P_Bennett

  • Posts: 11
Re: Domino cutter size guide.
« Reply #16 on: May 03, 2021, 12:56 PM »
The
Domino_DF_500 supplemental manual
is a good source for the information you seek.


Also: if you use dominoes with plywood you should aim to keep at least one full ply down and under untouched.
Think I shall Download it now



Regards

Paul


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