ss wrote:
Image below is the cross drive for a mini lathe. It is rusted solid.
I have soaked in WD40 for a couple of days and still stuck.
The arrows in green are points I can tap with hammer but dare not hit
too hard in case the `lug` breaks off.

Never used heat before on rusted items but would `hot air` paint
stripper gun work? I am not too bothered re the paintwork as I will be
repainting the main body before I re assemble the lathe.

Any other ideas?

https://imgur.com/47180QO

From the picture (and not being wholly familiar with lathe mechanics)
I'm not quite clear what's supposed to slide on what.

I *looks* as if the threaded screw is meant to rotate and move the
lump of metal with a groove in it across the other U-section larger
piece of metal. Given that I'm not quite clear why tapping at the
green arrow points would help, especially the ones on the LHS.

The harder I look the less I'm clear about what's meant to slide! :-)

However, one thing that's worth trying (it's often worked for me) is
to hit the seized joint so that you squeeze it, preferably with a
heavy block or bigger hammer on the opposite side to increase the
effect of the hitting.

--
Chris Green
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