I mentioned that I prefer to cut CFC so that instead of making it Dust in the Wind, I can cut useful parts instead. I am getting such an opportunity. I am remaking that motor bracket in CFC. I have a significant piece of CFC from which I can cut a 2.5" x 3" piece.
My sneaky way to connect two CFC parts together at a right angle with screws, since the threaded inserts approach is clumsy and gooey, is to use effectively a coupler:
Vertical part A gets two through holes. The screws goes through them into through holes on the coupler C, with nuts on the far side of C. Two screws from the top of C go into holes in horizontal part B with nuts on the bottom of B.
A commenter made an interesting suggestion of counterboring the far side of the second part to bind and epoxying a nut there. This is a great idea if you need a flat surface on the far side. (It also looks prettier.)
In this case, after cutting off the 2.5" x 3" part, I seem to have an uncut piece that I can cut off to make a coupler.
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