My friend, i will give you another example.. if you have a cheapo folder that has a hell of a blade play and worn liners, and you are afraid that it might close on your fingers, but you don't want to throw it away, just replace the pivot screw with a regular hexagonal head screw (same millimeters in diameter) and tighten it as much as you can. Remove any thumb-studs or pocket-clips and you have a virtual "fixed" knife.. And something else.! I made also an simple sheath that hold most of the knife inside, to be exact about 3/4 of it, for all my small "fixed" knives... They still serve you in their new live and you save money buing new ones.
p.s. forgive my english, if any mistakes made...

p.s.2 how do you make that thing with the "balloon dialog" in the reply.?