This is very useful. I wanted a heater to allow printing of ABS for my CR10 and was thinking about a variety of mechanisms enable controlled heating. It seems there might be a gap in the market for a system for controlled cabinet heating. Your solution is very economical. The “bulb” £5.00 from Amazon UK (150 watt version). Ceramic bulb holder £00.99 from China direct and controller again from Amaby Henri_Lens - General