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I got the job done. And you and Airhead are right about temperature. It’s a learning process. I have reciprocating saw but not the blade. The hacksaw blade would have worked but taken ages and I don’t have the frame which allows the blade to poke out - it’s on a list of things I should have.
This pic shows what I could have used.
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TGR
absurdbird
How many screws do you need to cut?
Agree with Airhead - go as slow as possible, it’s the build up of heat that kills the blades. Cutting/drilling faster doesn’t cut the steel any quicker - the opposite in fact.
If there’s any way to get coolant in there (just water will help) that will make a difference- or stopping and quenching the blade.
I have a big reciprocating saw that will cut through screws with a bi-metal blade, but sometimes a hacksaw works best.