from your class 3 build thread, I think it as kiwi307 posted it was flat seamd panels with a 1%luff curve maxing at 33% up from the foot. the bolt rope size will depend on your track size. I would recommend actually buying some proper ally track from a ally mast maker, you can also buy a number of different profiles from caravan annex makers. its the same stuff . then you will know the right size BOLT ROPE.
My machine wont do bolt ropes, perhaps this time you will need to get a sailmaker onto it. maybe a nice airtrack job

aus230 said..

Just to be fair we all make mistakes. Seamed not seamd

But I can sew a sail and abbreviate some of the terms, but I cant hang a sail on a mask or haul it in with a sheath

Think I am going to look for a second hand sail for this one at least until I see if the dam thing works.
(fair go guys you know I am only a rock ape underground miner, The only thing I had to write for 40 years was B/F 30+holes /scrape)

interesting DN sail making video