This is my version of a food dryer changed into a filament dryer. The dryer I’ve used is this one: https://www.bol.com/nl/p/voedseldroger-elektronische-droogautomaat-4-lades/9200000100458325/?s2a= from Neu haus. I just have found the same one here http://www.premiumxl.de/de_/neu-haus-doerrgeraet-obst-und-gemuese-trockner-mit-4-etagen-doerrautomat-food-dryer-rund.html which I just found out is a lot cheaper 😛
Be aware that the temperature inside the dryer can reach 70°C so PLA and PETG are not suitable for this. I’ve used ABS for this one and Nylon for another dryer which are both sufficient.
I have used a bearing to make a rotating base which decreases the stress on the extruder gear. I have made a YouTube video in which I show how I prepare this dryer. It’s a bit experimental, but it worked!