After destroying my previous proofing box I've been having a few proofing problems, been spoilt by repeatable controlled conditions and forgotten some basic skills.
So I threw together a new box out of some leftover material from my shed. It's not pretty but an overnight test with some of my starters shows that it works fine, and that's all that matters to me.
The box is 500mm x 500mm x 300mm high, this will hold my starters, or my 3 loaf proofing dish, or 3 bannetons for final proof.
The box is heated by a single 40watt blue light globe, blue because it cuts down the infra red radiation. The temperature is controlled by a thermostat from a chicken egg incubator, it is adjustable for temperature and will hold temperature +/- 1/2 degree C. You can see the thermostat sensor on the roof of the box, and the round disc on the side of the box is the temperature adjustment.
Now hopefully I can get back to some decent loaves.