Hope Dan doesn't mind me using pics of a none Scrapyard knife but here is one of my customs that I converted to convex by hand last week using wet and dry.....

[Linked Image from i129.photobucket.com]

[Linked Image from i129.photobucket.com]

[Linked Image from i129.photobucket.com]

It still needs a little work and will never be as good as what Vic does but it proves that it can be done by hand.