120v Filament dryer/chamber heater

I designed this heater/dryer for a space above my enclosure to dry filaments. It can also be used as a chamber heater if the space is available (wall mounted version is in the works to take up less space and direct warm air down). 

Testing with prototype showed this will warm a 2 ft^3 or 15 gallon space to 80c (23c ambient) in appx 6 minutes. I have not tested larger spaces yet, but the intended space I will be using this in is 4.6 ft^3 and I have no doubt it will handle the job well.

Required hardware:

120v 500watt PTC heater core: (https://www.amazon.com/gp/product/B07P5NCR2F/ref=ewc_pr_img_3?smid=A3VAOAURHASR38&psc=1)

120v blower fan (remove adapter from output plenum):  (https://www.amazon.com/gp/product/B0CG1S1HGC/ref=ewc_pr_img_6?smid=A1AV40UDU1XL8S&th=1)

120v temperature controller: Multiple options, just make sure it can handle 10 amps (appx $25-40)

Aluminized heat shield material: Appx 1mm thick (https://a.co/d/guw3VW3)

7x M4x12mm screws

2x M3x4mm socket head screws

2x M3x8mm socket head screws

7x M4x6 heat-set inserts

4x M3x4 heat-set inserts

(Optional) Additional reinforcement between fan backing plate and stand:

2x M3x4 heat-set inserts

2x M3x6mm socket head screws

All parts (expect for the fan to heater gasket which should be printed in TPU) should be printed in PETG (at least) for PLA drying, or some other higher temp tolerant filament. I printed the final design in a flame-retardant ABS from Atomic. Which ever filament you plan on drying, print the parts in a filament more heat resistant than that, so you do not reach the glass transition temp of the filament while drying.

All told the parts above (not including nuts/bolts) is appx 75 dollars. Combine this with the storage container of your choice and you will have a better filament dryer for multiple spools than what is available for many times more off the shelf.