If you try this yourself, chances are you’ll not do the job cleanly enough, you’ll likely flinch. It will have to be a hard quick strike, with something extremely sharp and weighty.
Oh and its going to really really hurt 😆
Powered saws dont cut off digits cleanly, makes a right bloody mess. Seen a number of saw and spindle moulder accidents to know thats whats left looks like burst hamburger*.
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A meat cleaver will cut it off, but they smash through the bone and its far from clean. I’d happily volunteer here, but its years since i used one, so my aim might be a bit off.
Then of course theres the infection issue, which could lead to serious complications, loss of the remainder of the limb, or worse.
And you cant just cut it off and stick an elastoplast on it. Chances are again you’ll end up with it being infected and well that is likely to be an emergency state of affairs.
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It’s a wait to be done by a surgeon, but I’d wait.
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* Spindle moulder accident, so you can see despite the cutter being very sharp and moving at 8000 rpm it makes a hell of a mess. Sure most of it gets vapourized, but the end bit is ragged, so please dont try to use a powertool.
https://www.ukworkshop.co.uk/threads/nature-of-the-game-warning-this-post-contains-graphic-images-of-a-hand-injury.146419/
My own little accident involving a metal planer(shaping machine) and finger left a hell of a mess.