Silica desiccant electrical dryer

This is an electrical heater that I made to dry silica desiccant. Its intended use case is to dry the ready-made and filled desiccant boxes without the need to remove the desiccant from the box for drying.

Link to silica desiccant box:
http://www.thingiverse.com/thing:2245855

Electronics is pretty simple: I have used a temperature controller, power socket, and power supply. I have hooked the controller output to an old heated bed from Lulzbot Mini printer. The temperature sensor is glued