Hi There,

I wonder if someone could give me some guidance.

I bought an old Swinden vice a few years ago from a car boot sale. At the time of buying I could appreciate the quality of the vice but hadn't heard of that brand before.

It was working fine after just a good clean and lube up.

I let work borrow it and now a section of the thread is very tight. Only over an inch or two but tight enough to make using it awkward.

I'm guessing that the main thread (I don't know the proper name for it) has been stretched by over zealous tightening and that's what is causing the problem.

Does that sound like a likely diagnosis?

Any ideas for a remedy? I've tried working the jaws back and forth over the tight section but it hasn't helped.

Could I run a tap down the thread to try to correct the stretch?

If that was a sensible option, does any one know what the thread is? I've had a snoop around the internet but no luck so far.

I can't complain too much about the damage occurring at work. It's my Company

David

Thank you. That makes sense.

Thanks Howard. I guess I've got nothing to lose from trying to recut the thread. I'll give that a go.

Thanks to you both.

Thanks Jeff. I'll check that when I strip it down.

Thanks all. That'll be a nice lockdown project

Hi all. Just to give you an update. I didn't have easy access to a die do I spent an hour dressing the problem area of the thread with a flat hand file and it seems to have done the trick. It's 99% as it should be. Runs freely apart from slight resistance over about 1/4".

I identified the problem area by screwing into the "captive nut" section until I felt resistance then backed the thread back out again to dress it then tried advancing it again.

I couldn't see much wrong with the thread but there must have been something!

Thanks again to you all! Much appreciated.