Hi lads, first time posting on this board. I'm trying to disassemble a fixed gear bike I have so I can paint and rebuild it and I've removed everything except the crank and crank arms. Apparently you need a special tool for this but I've seen some people say you can just beat them off with a 2x4 and a hammer.

Anyone have any advice on how to remove it without the tool? I'm not particularly worried about the crank getting damaged, it looks pretty sturdy.