I'm about to attach a stair railing to the wall. It's 12 feet long and has a circular cross section except for a flat bit along the bottom where it attaches to the brackets.
I was thinking of cutting off the end of the railing (A) at 22.5 degrees and then putting in a little piece (B) that is cut 22.5 at each end, and then another piece (C) also cut off at 22.5 that goes to the wall (see crude diagram below). This is a sort of miter joint with an extra piece in the corner. But I'm not sure about the best way to assemble it.
---------------------.\ A . \ . B .\
------------------. .. | |.. | | C | |_____|
Ideas about assembly I have had:
1) put a flat board against the railing, mount a 22.5 degree wedge on the board, and use a clamp to hold B onto A. This didn't seem to work when I tried it.2) use pinch dogs. Never used these. I'm not sure I'll be able to get the parts properly aligned with them. Are they likely to work?
3) use hot melt glue or maybe super glue or double stick tape to hold it in position so I can drill holes for screwsHave I missed the perfect assembly technique?