Quoted:
Quoted:
Cut that contraption into a million pieces
This. It's just a bad idea all the way around. You don't use a hammer to drive a screw... don't do this. There is a reason a 240 plug is different than a 120. It's just not meant for that purpose. As others have said 240 typically has much higher amperage breakers... too much draw and shit will burn.
It is perfectly ok to split 240V into 2 120v circuits, what do you think happens in your panel, you must however have a neutral present, not just a ground, and also 240v breakers are not just for higher amperage, 240V breakers come in all different Amperage ratings, all depends on application.
ETA: not saying the application the OP stated is correct, it is not. It is unsafe.
Cut that contraption into a million pieces
No, either remove cobbed plug and recepts. and reuse cord for a proper application, or strip it and cash in the copper!