Having used TCE to clean heavily fouled parts I can't emphasize enough how much better it is than acetone. It's really not close. Acetone might as well be water

Having used TCE to clean heavily fouled parts I can't emphasize enough how much better it is than acetone. It's really not close. Acetone might as well be water compared to TCE. TCE makes years of caked-on, baked-on crud wipe off like it was never there. And 30 seconds later not a trace of residue will remain. In the extremely rare case that something is hard to clean with TCE, that same thing will be nearly impossible to clean with a less evil substance. Don't get me wrong, I have zero doubt it causes cancer and God-only-knows what else. The stuff is like an eraser for physical reality. Whatever tiny droplets of it you breathe in, are desperately trying to clean your nasty organs away and leave a gleaming, residue-free skeleton behind. I suspect it could clean the face right off your head like in the end scene of Raiders of the Lost Ark. I no longer use it. For my purposes anything that can't be cleaned without TCE, doesn't need to be cleaned that badly. But I do get why it was used so much.