This is a simple bracket to hold a mini heater in the print chamber next to bento box. The heater assists in maintaining 50c+ without any added insulation to the chamber. I saw 55c when i placed a hand towel on top of the lid.
Chamber temperature of 50c is reached significantly faster with the heater in addition to the heat bed.
Recommend ABS, ASA or PC, as the bottom easily reaches 85c and will melt other filaments when the heater is running.
The author marked this model as their own original creation.