you dont really need a whole lot of tools. I use a hand coping saw after I trace a handle pattern on either walnut or quilted maple, or a segment of deer antler.
Drilling out the pin holes is the really tricky part. I use a hand jewelers drill with smaller drill bit that I need . You then need brass knife pins (available through many supply houses. I alo use gel super glue fter roughing up the tang of the knife.
Ive made several knives out of car and truck springs I got from a junk yard.