Member postings for Barry Graham 3

Ah thanks very much for that ! Exactly the info I was looking for.

I did run a very tentative M8 x 1.25 tap down the hole and I did manage to clean up the thread at the bottom. When i screwed a bolt down the hole it doesn't appear to tighten the way though. I didn't want to put much force on for fear of making more damage. Does the bolt just apply pressure on the slideway to restrain movement, or is something more devious going on ? What is the purpose of the clamp washer (which is also missing on my machine).

The platten casting shield and the scale/slip gauge bracket is missing on my machine. I can't think to badly of the previous owner - he sold me the F3 and a Colchester Student for £2K - so I can't complain if the machines aren't perfect.

I'm still getting to grips with the F3. I knew nothing about them before I bought the machine. So far I'm quite pleased with it though

Hi All

I have an F3. A previous owner took off the X Axis way lock and tapped out the hole with some imperial sized thread to fit a stop for a dial gauge (he had the whole mill set up with imperial dial gauges to measure axis travel ). I am trying to work out how to put it back to stock, but am not sure what size the thread was initially. I don't think he tapped it all the way down - so there is a possibility I may have some of the residual (original) thread at the bottom of the tapped hole - but I can't screw a metric M8 into it (perhaps because the thread was damaged).

The Z Axis appears to be M8 x 1.25

The Y Axis is M10 x 1.5

I would really appreciate if someone could let me know the thread dimensions and the length of the threaded section on the X axis locking lever. Is it full threaded, or is it partly plane and partly threaded ?