Well, I don't know what you'd call it, but what I ended up doing because I was trying to get away from any raw edges, was I put two blocks together right sides, drew my triangle, sewed on the line, then cut out the triangle, ironed it open and put a backing fabric behind that and topstitched it in. No raw edges.
There would be a definite learning curve, (ha, ha) to getting perfect points on the triangles but at least it isn't driving me crazy anymore trying to figure it out. And, I'm not sure you could do more than one on a block without distorting it too much.
Watson
(Don't mind the topstitiching...I was too lazy to take off my FMQ foot.)
[ATTACH=CONFIG]566504[/ATTACH]
Last edited by Watson; 01-23-2017 at 06:35 AM.