Just divide 130 Degree corner by 2 and you have 65 degrees each peice. Most outside corners are 90 degrees so it would be a very sharp corner at 130 degrees.
if they are inside corners try coping moldings and if that doesn't work then put the molding against the ceiling and trace the height and projection with a pencil on both sides of the corner making sure wall lines align and then mark the molding where it will meet and find your angle on the saw...hope this helps
You have the keyword in your question! The angle in a gable end is NOT a compound cut. The crown is not going around a corner. Both pieces running up the gable are in the same plane. Think about how easy that cut is....... Think door or window casing.
Thank you. Does an old school powerless miter box work well? If so how do you prevent the molding from sliding outward as you cut the angle(creating like a 43 or 47 deg. miter cut)? Thank you very much.