What would be the best tool, manual or power, to use to perform such an operation? Would a guillotine paper cutter, for instance be capable of cutting quickly right through the girl's bone if a strong man were to do the chopping? I was looking at metal shears, but all the models I've seen don't seem to have enough clearance between the blade and the table for my character to insert her arm.
I would really like this amputation to be as clean and precise as possible, which is why I avoided looking at (say) table saws or chainsaws, as I figured those would probably mangle the tissue -- but I'm willing to be corrected on that point.
It is also important to note that my heroine cannot go to hospital after the amputation, but must be privately treated on-site, because she is secretly Not Human and her wacky blood type and other anomalies would cause Serious Problems in a hospital setting.
Searches Performed: "severed arm workplace", "accidental amputation shop", "metal shear safety", "guillotine paper cutter", and variations thereof.
Many thanks in advance.