here's a handy addition to your shop tools. Forget that sloppy, old cut off wheel mess. Nice clean cuts, no burnt metal edges, no grit flying every where, no sparks, etc. DOES require PPE and an air compressor but it is a heck of a lot nicer and easier on the body.

https://healthyhandyman.com/best-air-reciprocating-saws-guide/

I have the Astro but I have used the Ingersoll-Rand. The I-R's a little easier vibration-wise but not so much as you'd notice for doing the cuts on the floor panels. Buy the GOOD blades and an air whip ball swivel.

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now