Domino cutter size guide.

[P_Bennett]

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 [emoji6]

Regards
Paul

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[Thompmd]

Great Idea, I’ve not seen one and I hope someone has one they can post.

 

[Sparktrician]

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]

 

[P_Bennett]

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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[tsmi243]

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.

 

[P_Bennett]

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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[ChuckM]

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).

 

[clark_fork]

This is what helped me when I got started:

[attachimg=1]

 

[P_Bennett]

This is what helped me when I got started:

[attachimg=1]

[emoji1373][emoji1373][emoji1373]

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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[Birdhunter]

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.

 

[P_Bennett]

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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[Cheese]

Here's some general Festool recommendations.

[attachimg=1]

[attachimg=2]

 

[P_Bennett]

Here's some general Festool recommendations.

[attachimg=1]

[attachimg=2]

Hi

This is awesome!

Thank you one and all for your help and advice

Regards

Paul

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[rst]

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.

 

[bertv]

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.

 

[P_Bennett]

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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[P_Bennett]

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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