I have done mitered cabinet doors very successfully
using biscuits. No failures after several years,
There is an interesting article in the current FWW
that details mitered mortise/tenons. Looks interesting, but
I don't know if I'm up to that level yet.
I would guess production shops use biscuits, loose tenons
or something like that.
I wonder how many doors are actually mitered vs. using rail and stiles that
are shaped 2 profile router or shaper bits.
If 45's are used, splines and or biscuits would be a good method to
strengthen the joint.
I have seen mechanical fasteners shot into the corners also.
Very few production shops use mitered corners on cabinets...they use
coped joints cut w/ matching cutters.
For home shop, buscuits are ok but I personally would either use a
haunched tenon or a through spline if I were doing a quicker/easier
This is. of course, the standard for door construction I think. I use
cope/stick and MT more often than not if I have a choice. Quick
and easy (relatively speaking).
I used mitered corners in a bookself/cabinet project where
the design (my own, more or less) called for a bead around the
inside (next to panel) and outside edge of the doors.
I think the miters were the easiest way to get
crisp 90 degrees at each corner (don't care for the
rounded 'routered' corners much).
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