Haven’t had a resin spill inside my Moai yet, but had a disaster in my Form 2 with Tough resin, a distinctly nasty material.
I completely disassembled the printer, all circuit boards, all plastic parts, all wiring harnesses, anything that had resin on it. I soaked it all in 91% isopropyl overnight. Brushed off the thick stuff that didn’t dissolve right away with a plastic toothbrush. Repeated soaking and brushing as necessary.
After letting everything air dry for days, I put some of the plastic bits under the Moai UV curing lamp for hours and others out in the full sun, to cure out any remaining resin that couldn’t be washed out.
Needless to say it was a royal pain in the neck, but eventually I got it cleaned up. Key is to get every last bit of resin either washed out (preferably) or cured solid. Otherwise fumes will emanate from the uncured resin and deposit thin films on your galvo mirrors, causing no end of bad prints and hair-pulling.
Fortunately due to the design of the Form 2, my galvos and laser were not affected. Good luck.