H-M Supporter - Gold Member ($25)
- Jan 7, 2016
Is that a topslide or cross slide way? If it was a topslide I was going to advise you to look for a new one as they might be easy to find. In fact a lot of guys are replacing the topslide (compound for us in NA) with a solid block to make the machine more rigid. But a cross slide is a different matter. Welding cast iron is tough because with the high carbon content it is brittle and can't take any internal thermal gradient without cracking. So as the previous poster mentioned, you can't heat up one area and have the adjacent areas still cold - it will suck the heat from the weld and also the internal stresses will cause a crack for sure. So you have to heat the whole thing up in say a bbq, insulate it with blankets, weld it, then cool it down gradually. There are newer nickel based welding rods that can weld the material quite well. And you can braze it. And some guys weld it with directly with a torch, flux and filler metal from cast iron piston rings (Kent White for one - but he is not your average welder). Then they put the part in a wood stuff with some logs and let it burn down over 24 hrs or back in the bbq and let it all cool gradually. But for an enco Chinese lathe you have to wonder if it is worth it. Try to get a replacement part if you can.
Nope, I am the Andy who has signed up for your April 2019 class in Vacaville.Andy are you the Andy that took the Class a few years back that DH Mayeron hosted at the Blacksmith shop?
It is already loct-tite-ed down. It was a bit high and tilted inward. The screws pulled it most of the way down. Both dovetails have been milled so there is no going back. I milled both dovetales in one setup so they are somewhat parallel.One thing I would do how ever. Before lock-tite-ing it down, I would test the way by either indicating it with mag base mounted on the cross-slide and indicator against the repaired dovetail and test to be sure it isn't high or out of parallel with the rest of the way.