I want to make my own folder kit handles and backspine. What do I need to know?

The thickness you need for the backspine material is .156 or 5/32 precision ground stock.
The bolsters are the same thickness on all of our current folder kits.

1. After grinding the scales to the bolster curve you may have to counter sink the bolster deeper to accommodate the head of the screw sticking up a little. Just use a 5/32 drill and make the counter bore a little deeper. This will be fine.

2. For making your handles, use a drill the same size as the tapped hole to pilot the hole from the backside of the liner (be careful not to wobble the hole out, drill it straight) then use a 3/32 drill for the clearance hole. Then, use a 5/32 for the counter bore to accommodate the screw head. The counter bore should be about .075 from the top of the handle material. This will let the screw head sit just below the surface of the handle.