you need a set of machinists wrenches, you can get them at pep boys or similar and they are just 8 to 12 inch long wrenches from the really small to like 3/4. I picked up a set of snap ons for like 60.00 but they are really nice, but they had some cheaper ones for like 20.00

I've been trying to find out the same thing, i'm trying to design the blade holder now if I have any luck I will let you know. it's going to be a custom lathed piece so..