
Yes I think you do need to do that so that the ends can be banged in first then the middle. I was watching Mark’s video again the other day and the ends definitely went in first, so the fret radius has to be tighter than the fretboard.
I have a fret bending jig and a metal lathe. I could make copies of the rollers from silvered steel stock if yours don’t work out.
One roller needs a groove in it to keep the wire from twisting.

You can see it better on this photo but there’s actually two bearings and a washer in between to create the perfect sized groove.
Thanks for the offer, if I balls this batch up I’ll definitely take you up on that
Good work on making the jig 😀
I think common wisdom seems to be bend a couple lower than your radius. I've used 14" for on three 16" necks and 10" for a 12" neck and both seemed to work well.
Guitar making is the art and science of turning expensive wood into sawdust.
That’s great @cheesewhisk. If you ever make a spare throw it my way 😉
I have too many guitars...said no one in the world..ever!

TRIXES 8 Frictionless Abec 9 Sealed Skateboard Roller Skate Bearings https://www.amazon.co.uk/dp/B00WXDAUQG/ref=cm_sw_r_cp_api_glc_i_Y4G5DMWSX04VJYJ8K0KH?_encoding=UTF8&psc=1
Happily send you one but here’s the bearings pack and then some M10 sized bolts and you’re there

Thanks - was just kidding...thanks for the link @cheesewisk I’ll have a crack at building on