[vindaloo]

I've just made this very ugly jig to cut the mitres for the door I have to make for my latest dayclock. The outside angle is exactly 90 degrees (or 270 depending on your perspective). To test it, I cut 4 pieces all the same length, using a makeshift stop block, laid them out on a piece of masking tape, rolled it around and wouldn't you know it, a perfect square.

This was so easy to make, and all out of scrap I had laying about, 12mm ply base and the rest out of 4x2 pine. I put a slightly higher piece behind the angled pieces to hide the blade, don't want to lose any of my digits don't you know :surprise:

Edit: oops, forgot the photo

 

[vindaloo]

..................To avoid any slight table saw T Slot to jig mounting errors, be sure to cut each mating corner by cutting one piece from the left side and the other piece from the right side............

Sorry Charley, forgot to mention that. That's the way I used it, remembered that from a video I saw on it. This is the first time I have had a 'square' rather than a diamond!