• btmetz – I like those photos – and I think using spring steel is a great idea for the rest of the world. Dont have a laser cutter, just a torch and a drill press?  Even auto/truck axels are decent, because they have splined ends. Splined ends could be mated to pulleys, or at least ground down to a specific profile, using the splines as a guide.…[Read more]

  • Standardization can be your friend! Three questions:

    a) I noticed your ‘hardened’ teeth are an hourglass shape, so I assume your thinking of getting four sharp sides out of that tooth before you have to replace it with a new one? Great idea, but why not use standard carbide inserts? Finding someone to cut, then harden, those hourglass teeth is…[Read more]