"SteveH" wrote in message
. ..
snip "Conor's" ignorant clap-trap


Erm, but a G-Clamp can, and quite often would, damage the face of
the
piston as it would be able to rotate on the face of it without
actually
turning the piston - because they don't have the 'pins' to lock onto
the
piston as proper tools do.

Actually the average G-clamp is designed *not* to rotate on the
'work-piece', so the only force most G-clamps will apply is a pushing
force and not the (in this case) rotational force required to wind the
'outer' piston back in.


There's ingenuity and there's bodging.


Exactly.