"Steve" wrote in message
...
I have about 250 sheets of used (in good condition) 26 gage roofing
material. They are all 16ft long and I will need to cut many to other
lengths while adding a shop extention.

I have tried tin snips and these cause distortion of the ridges and
spreading of the ridge pattern, hence sheet width. Not much, but enough
that I get a "fan-out" effect in the width. Also unable to fit tightly to
the next upper sheets.

I also tried cutting with an hand operated electric sheer as well and got
similar results.

Abrasive cut-off leaves a burr on the edges and I can to a lot using a
hand grinder. Recipricating saw produces similar results.

I'm told the "pros" use a sheer with a die that matches the corrigations.
The best I could afford would be a treddle opportated squaring sheer and
with our a die, I would get poor results due to flattening by the sheer
blade.

Are there any other methods that I should try.? Perhaps a saw blade for my
skil saw??


Thanks,

Steve

The pole barn builders I have seen use the shear for the straight cuts and a
tip snips for the angled cuts. A saw causes a bur that is hard to get rid
of, a plasma cutter leaves a hardened edge that will wreck your snips if you
have to adjust a cut.
Steve