Hubby was at a local restaurant supply company a couple weeks ago for something else, and remembered to ask them about a cooler for me to turn into an incubator. He described what we wanted, and they didn't have that but they did have an old catering hotbox they were willing to give us for free since they didn't have the cord to power it.

It looks like this:
http://i26.photobucket.com/albums/c1...otBox_2072.jpg
But mine has a glass door instead of the solid metal one.

It's been kept very clean but has no shelves otherwise is the perfect project.

Has anyone used one of these before? How'd it go, and were the temps easy to keep stable? How much flexwatt do you think would be a good amount to start with and then tinker down from there? It's about 6 feet tall, 3 feet deep, and 2 feet wide.