just an FYI, from Jerry Work's, "Getting the Most From the Festool Domino Machine":
Usually the recommendation is
to use a tenon one third the thickness of
the work pieces to be joined thereby leaving
an edge to slot width the same as the
tenon width
In working with Dominos I find I prefer to
use a Domino that is half, rather than one
third, the thickness of the work pieces to
be joined. The Domino tenons do not
swell up the way biscuits can and the
grain runs the length of the Domino tenon.
Since the Domino penetrates into
the edge of the work piece a relatively
long way (anywhere from 15 to 25mm
depending on the tenon length you use,)
the bending moment is spread over
enough distance that even on a stressed
joint the relatively thinner wall provides
plenty of support.
Usually the recommendation is
to use a tenon one third the thickness of
the work pieces to be joined thereby leaving
an edge to slot width the same as the
tenon width
In working with Dominos I find I prefer to
use a Domino that is half, rather than one
third, the thickness of the work pieces to
be joined. The Domino tenons do not
swell up the way biscuits can and the
grain runs the length of the Domino tenon.
Since the Domino penetrates into
the edge of the work piece a relatively
long way (anywhere from 15 to 25mm
depending on the tenon length you use,)
the bending moment is spread over
enough distance that even on a stressed
joint the relatively thinner wall provides
plenty of support.
