My MK3S+ is in a Printed Solid enclosure in an unheated garage - in the winter, it is too cold for the printer, so I designed a heater bracket to heat the enclosure to a working temperature.

This heater bracket was designed specifically to hold an Amazon Basics heater (https://a.co/d/igc2RpX). I designed it for the MK3S+ Printed Solid enclosure, but it will work on any Printed solid enclosure that has an unused access panel opening on the side.

I control the heater using an Inkbird ITC-603T Temperature Controller (https://a.co/d/1SsKk0X).

There is a deflector plate that mounts on the inside of the enclosure to deflect the heat up – this keeps the heat from blowing on the Einsy and also prevents direct air movement on the build plate.

For installation, you will need four M3 x 14mm screws (with M3 washer on head-side, preferred) and four M3 nuts (square or standard).

Screw head goes inside and nut is recessed in the exterior heater bracket. Once installed, the Amazon Basics heater slides into the bracket and is held tightly, with anti-tip button fully depressed.

If you have an extra open small exhaust opening (needs to be on the opposite side of the enclosure), there is also a temp sensor plate to allow the temperature sensor for the Inkbird ITC-603T to be placed inside the enclosure.

This is the first design I have posted – I would love your feedback. Thanks!!

Printed with black Prusament PETG, 0.20mm layer height, 20% infill with 4 perimeters. Supports everywhere for the heater bracket and deflector.