To me a custom razor is any razor that you order or create to your own specifications.

That could involve wanting a Helji No. 32 blade fitted out with a set of Buffalo horn scales. Or it could involve getting someone to smelt the steel, shape it however you want, temper it with the blood of heathens, grind it to a quarter hollow, embed it with rhinestones, and scale it with prehistoric mosquitoes embedded in amber.... (hmmmm, I think I need to talk to Joe...).

James.