I suspect no one has bothered to produce a for-human-use clamp because there's not a huge call for male castration (members here excluded), which would make them prohibitive due to cost if someone did.
I also presume there's very little instructional information about self castration like banding etc around because society deters autocastration or auto anything, more than it does self-diagnosis or self-medication. Perhaps if there was more information, there'd be less botched and potentially fatal diy results in casualty.
While you have far less chance of anything going wrong with a surgeon involed, i've read posts citing dramas in that situation here on the forum. There're risks having anything done to your body. While I'm sure people *have* castrated themselves with elastrator bands, I reckon using those particular bands would be asking for trouble. They're just too weak and flimsy and too liable to roll off - which would be disasterous and somewhat...messy
