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so i did some more tests this evening and the threaded part of the shaft is definitely not running true. however, i used a scraper to dress the seating face of the spindle and visually the chuck now looks much better. i'll turn a few things tonight and see how it looks later.

So, is my conclusion that the shaft is bent accurate? I'm struggling to work out an alternative. If this is the case, does anyone know the exact model so that I can search for a replacement?

Ok, I hadn't thought of trying that. So, i put a morse tapered drill chuck in and made up a little jig with a screwdriver held against the barrel of the chuck. At a distance of around 100mm from the bearing I get a full 1.5mm of lateral movement.

I think I can see the same effect in the safe without the chuck, but because it is so much closer to the bearing it is less pronounced.

I can't see any movement, it doesn't actually wobble now I look at it. it looks like the shaft coming out of the lathe is slightly bent....

Hi, I am new here. A friend suggested this was a good place to get help with a problem I am having. I have a Record Power/ Coronet lathe. I have had it for a few years and have done quite a bit of simple turning. Last week I bought a new chuck and it has identified a problem with the lathe...