Tony - sulfur will remove the zinc and make the alloy harder - you may not need to WD after coating. Most of the toaster oven fan motors are induction motors and will not run right from a PID. Find somebody to wire it direct with a cord, plug the normal plug to the PID, new one to the fan. SSR will work on 240 (if so rated) but need a larger heat sink. US 220 is single phase, split to get 110.