Hi Ferg that's some nice work i don't say much but had to for this very nice work. someday when my son come's by i'll have him post some work of mine .cabinet maker for 35 years that all ended with a fall not complaining now have leather best thing so far was a prosthetic mad of leather for a woman with no hands she now shoots her 22 ruger very well her doc said it cant happen i told her don't say to much to him it's hundred year old tec i am sure it was just insurance problem for him. just wanted to see her shoot again . .Ferg very nice work.
Bruno i find gluing the plug in first works well also dbl thickness of 8oz for the plug with a very lite stitch grove, just what i do don't mean its right by your work i know yours will come out very nice cant wait to see.
IMHO No not for holsters but all of the sponsors on this forum know better than me that's for sure my advice is call them tell them exactly what you intend to sew then your informed by a pro you can trust all of them for sure.
I just did a 3'' Rad just to be sure using 4 oz vegtan with 3oz liner stitched with 277 thread and it looks good no wrinkles hope it works for you if not i will send you a pic of the sample.
Sorry divide the total circumference by 8 then work each eighth one at a time constantly pushing one way like your making a thousand little wrinkles practice on scrap with the same radius and length of one eighth leave some extra to hold on to.
No notches skive the edge just a bit half inch or so then ease the edge by fourths or eigthly one at at a time and that will give you a nice clean edge try a scrap rad first hope this helps.
Chief when i first got my cobra the wife said i have never seen someone sew that much and make nothing ya well when you make that hole in leather its there but all is good now. HA HA . By the way good luck with that new machine looking forward to see more.