They are a good "project" if you can get it cheap enough Ken. They are not that well insulated, and the heating element should be up-graded. As well, you may want to look at a PID for real control of it.
If you can get it for under $100, and it is still un-used, I would say - try it. THen, if it needs help doing the job, muebe can steer you on the details to up-fit it Ken
Best of Luck!
T