HI coving a bay window. Having real grief. Have a bevel, protractor, mitre box. Box great for the standard 90degree internal and externals. I used bevel to left hand start of bay. had an angle of 142degrees. Halved that to 71degrees. Didn't work. Assumed for right hand would be 108degrees. Coving is duroploymer in a more ornate style than normal, and it is 134mm.
Any idea? Thanks
Any idea? Thanks