I recently replaced the Disc Brake Pads on my wife's Subaru (worst car we ever owned)! I have been recycling everything metal lately and a little voice inside me said, "hey, good piece of metal, make something" ! So I kept the four pads and put them in my basement shop. Well, here is what I made.
Step 1: Get some Disc Brake Pads
If you are a do-it-you're-selfer or not, you can still get your pads from your friendly (wealthy) mechanic. By law, you are entitled to all of your old parts! I just did my own brakes and kept the parts I had just replaced.
Step 2: Remove the pad material
One side has pad material. Put in a vice or clamp to a workbench or other stable surface. Take a chisel or screwdriver if you don't have a chisel (a sharp rock will do for you cave men ). And chisel off all the material till you see about ten holes. (mine had ten total, six 1/2" size holes and two about 1/4" and two 1/8").
Step 3: Grind down one side till smooth
If you are lucky like me, you have purchased a 6" belt sander! I got mine years ago, and it is one of my most versatile tools that I own. Well worth the price. Very affordable too! Grind down to bare metal and let it shine!
Step 4: Drill out the remaining brake material
If you have a drill press (or hand drill), chuck a 1/2 " bit into it and clean out the six 1/2" holes of brake material in them. Yours may have more or less holes. Depending on the vehicle.
Step 5: Drill a center hole for your trigger finger (optional )
I like to drill a center hole in these survival type knives for my trigger finger. It gives me more control and leverage. You won't drop this baby if you have you're trigger finger through the center. Very good for self defense situations.