We’ve had a few requests for the blades only from our handled carving knives…
… and so we now have a few of the blades in stock. Ordering info is here.
You can sandwich a blade between two pieces of wood with epoxy or use a 1/16″ slot cutter in your router:
The holes are 4mm or 5/32″ diameter. For pins you could use wood dowels, brass or steel pins (brass rod and steel or stainless steel pins are available here.) Good luck, have fun and handle with care!
The Sharpening Blog 
Are you furnishing carving knives with handles? If so, how do you order them?
Yes: http://www.hocktools.com/Knives.htm?