I like that! I did something similar to control a Slow Cooker for Sous Vide. I made an enclosure for the SSR, but probably can't control 1500W without a Heat Sink. I have the case on Thingiverse Here if you want to make one.
Hah! I should've known someone had already tried this. My next project is controlling the wood burning stove heating my house. Looking at linear actuators or stepper motors on the drafts.