What are you using to cut the copper? A jeweler’s saw?
I would change the saw blade first. Maybe it’s dull, maybe it’s
clogged, who knows. Make sure it’s facing the right way, and at the
I don’t think the problem is from the copper being cold though. I
don’t know how much copper is affected by the cold, but I’d bet it’s
pretty negligible at 50 degrees.
50 degrees is plenty cold to affect the working properties of the
human hand though, especially if it’s trying to hold a cold piece of
copper steady on the bench pin. If you’re not being able to hold the
copper in place and it moves a little and twists the saw blade, that
can make kind of a screaming noise, slow you down, and make you break
blades more often. The same is true with holding the saw frame
I’d look into moving a space heater downstairs to use when you’re
working. Little electronic units come pretty cheap, and they’re handy
for just keeping small places warm instead of paying to heat a whole