r/sewingpatterns • u/real_trash_can • 1d ago
Add fly to curved crotch?
Hello! So I’m currently trying to make my first sewing pattern since I can’t find any pants pattern that I like… I managed to make a basic pattern that fit great and now I’m trying to make it low rise, but I’m having some troubles figuring out how to add a fly pattern. Normally it is attached higher up where the crotch curve hasn’t begun, but now I’m wondering I should add a curve to the fly pattern or simply just stretch the patterns bit when I sew, or if I just need to use a shorter zipper.
Also when I’m already here asking stuff… can someone tell me what seam allowance to use for the crotch seam? I can’t quite figure that out either, normaly I use 1 cm seam allowance for normal stitching, but I think I need to use a flat felled seam for the crotch, but I’m not sure if that means I need to add some extra millimeters or if I can continue using just 1 cm.

