Morning. I was recently at a swap meet and an older gentlemen was there selling knives he made from old 2 man saws, i liked the idea and decided to give it a shot. Getting a profile is straight forward enough and I can handle putting an edge. The struggle point is drilling pin holes in the hardened steel. I have read TONS online with varying opinions , most agree something like carbide tipped is ideal. But the type of bit varies. Was curious on what type of bit (carbide twist pit, tile/glass bit, masonry bit, etc...) that would work best to drill my 1/4" pin holes. Any and all advice is appreciated, this is more my first time making my own blades. Thank you!!!!!!!!!!