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I couldn't believe my eyes Craig! I figured it had to be one of three possibilities... either McMaster sent you mild steel in the wrong wrapper, or you substituted aluminum for filming purposes, or the Tormach 770 is freaking amazing. Good job my friend! Ciao, Marco.
Thanks for sharing your learning journey, I need to get better at setting up the camera when I try new things as it is great to learn from others as they learn themselves.
Metallurgy is fun stuff, the hardness specs are near cast iron and aluminum so relatively the same machinability just up your coolant or choose a good relative coating.
Gotta agree with that: "not as hard as I thought". Altough I am a beginner, I milled booth regular mild steel and an improved D2 type of steel Called uddeholm Sleipner. Gotta say that the tool steel was much easier to machine than the regular mild steel. :)
I never machined tool steel before, but I had a hard time putting self-drilling screws through the tang of spring steel knife before and it was forged thin. The solution was to pre-drill that annealed tang. Must be the chromium in that alloy.
Irrelevant, but is there a way to machine medium carbon steel wires into exotic pan headed self-drilling screws with long sharp edges and finer threads than Home Depot knockoffs? By the way, I heard that tool steel is easier to machine than spring steel which has chromium.
What about using HSS ie old drill bit shank, would like to see limits as far as sheet thickness it will punch with offset concave ground on end to start shear easier
@@Hitman-ds1ei Yes, even the branded domestic made drills have carbon steel shanks. If they were made full hardness, they would spin in a drill chuck like endmills do. Go take a drill and give it a little file nick. A file will cut a drill shank. The same reason for why I can turn down a drill shank in the lathe, or why the drill shanks can be buggered up in a drill chuck.
@@Hitman-ds1ei ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-soSvrXBakNw.html at -3:04 "...taper shank drills have a high speed steel body which is flash but welded to a carbon steel shank..."
Surely you're just machining the soft steel there though. Which is roughly the same as mild steel. Harden it then have a go :-) That would be a better video :-)
Yeah, not hardened. I wish I could, I need a 50 ton electric hydraulic press to run the size of punches I need to make. I should get some hardened stuff just for fun to see what the 770 can do. :)
