Saw (sorry) this cute dovetail saw on ebay and got bit by the ebay crap shoot. What looks like a brass back is colored (or brass plated) steel, the saw plate is warped AND twisted and the back has more moves than a hula dancer. Oh well, it was cheap and I’m going to learn a few things with this one. First the plate. I was actually able to sorta straighten it out but it took a while and a light touch to avoid kinking the thin plate (0.030”). What looks like a an angled plate is actually the back set deeper on the front. I think the back might be a lost cause but I might be able to remill the slot. I didn’t want to de-rust the blade by scrubbing, that was a lot of work so I googled electrolysis (de-rusting with electrons: article and another article). A [car] battery charger is usually used as an electron source but I don’t have one. But I *do* have one hellacious DC power source (arc welder). Hmmm, this could work or it could vaporize the blade. Short story, it worked and I resisted the temptation to see how fast I could de-rust things at 250 amps. Things got plenty warm at 30-50 amps.
- Nipple spear take 2. Got smart and copied the commercial version. Learned a few things about work holding, the bulbous end fits both a collet and a center. On a manual lathe you flip it couple of times. Two tapers.Spoke spear - for digging nipples out of a puddle of linseed oil and putting them in a deep(ish) dish rim socket. Serrations really help retain the nipple. No idea of the angle, just stuck a shim under the front of the spinner and ground away.