Topslide clamping screw

I need a longer screw on the topslide of a vintage lathe, the one on it now doesn't seem to be it's original length and it won't hold a special accessory I need to fix on

I want to remove it and insert a longer one but not sure how they are traditionally fitted in ? screwed probably but has anyone tried to remove one?

Edited By vic newey on 22/11/2019 12:16:30

I would expect it is screwed in?

I often remove studs from engines and other machines. I use a stud removal tool if they are tight.

Edited By vic newey on 22/11/2019 13:37:08

Edited By vic newey on 22/11/2019 13:37:33

Careful: don't just try unscrewing it without examining the underside of the slide.

The stud might have a shallow countersink head on the end, or be staked in some way, so treating it as just a simple stud risks damage including possibly cracking the casting.

Assuming that the stud was screwed in from the top, stud removal tools may mark the thread, especially if the stud is tight / corroded into place. But, if the stud is never going to be re used, damage should not matter, as long as it comes out without shearing off.

If it does, you are in the "centre, drill and tap" routine, so you need to certain of the thread (Looks like BSW to me? )

Howard.

I got it out with using the two nuts technique, it took a bit of a pull before it finally gave a crack and then screwed easily out.

I have now fitted a longer one in and all is well!