I bought a Clausing 8520 today, in very nice shape. I did very well on that one.
I also bought from the same person a SB 9/10 taper attachment. That I took a beating on
. I was checking out the repair made on it, and didn't notice the hair line cracks on the gib screws. I can't re-sell it, so I'm going to have to braze it and retap it. At that point I would probably not use the original screws (missing from this unit), but I have from my current cross slide. I don't have an oxy/acet unit, only mig, so I'll have to bring it to someone to get it done.
Has anyone ever repaired a cross slide that's been abused by over tightening? I don't believe it will be a problem if repaired well, since the gib will do the sliding. I think the real issue is re-flattening the bottom plate of the cross slide and preventing it from cracking again. For the few times I will need and use it, I may just use my current cross slide until I need to do tapering.
Pics of both will be coming. The Clausing is now in pieces so I could get it out of the van and down the basement. I never did take pics.
The clausing will go through a rebuild to see what I need, I already see I probably need bearings on the idler pulleys, or they need to be dimpled in, as the outter race is spinning (either from being too loose or because it's starting to go bad), it doesn't feel gritty, but it is not as loose as expected.
I need to see why the quill does not return to the top on it's own, I don't see where the spring is on this unit. I'll need new felt wipers. There didn't seem to be any backlash??? How is that possible? The screw is in beautiful shape, all fat at the tops. Lots to do... Gotta get the knee apart, I took the table off, but left the knee intact, now have to pull that apart.
The unit just has an on off, so I have to get a drum switch to reverse it.. I may even go 220 after reading what Finster said about his motor under 220..
http://www.hobby-machinist.com/threads/smoked-my-8520-mill-motor-today-crap.56998/#post-469052