This is PETG, one was left out in about 40% humidity the other was dried to about 20%
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Will someone divulge their drying technique pls.
I use a food dehydrator for most filaments (50-60°C for PETG, 40-45°C for PLA). Works great and cheaper than dedicated filament dryers. For storage, airtight containers with dessicant packets keep things dry. You can also check out portable power stations on gearscouts.com if you need to run your dryer in places without easy outlet access - some printers draw a lot of power during long prints.
Air fryer at lowest setting, like 150. Then store it in a sealed bag with a dessicant pack.
Secondhand food dehydrator.
Much cheaper and works perfectly fine.
Mine is just Polydryer. Keep the box low humidity keep the filament low humidity.
Need more testing to see how well this works though since swapping filament in these boxes is inefficient and the beads quickly get used before you need to reset them.
Only do this if you have money to burn, or you are doing 3d printing as a business and at scale
I have a dedicated box with a heated carpet for reptiles that can regulate temp between 25-60 C, two 12v coolers and two boxes with silicagel, this one runs constantly. If there is a need to dry multiple spools - oven at 50 C for 4-5 hours. That's my setup for petg.
Place the spool on the bed set to 60-80°C, then put an empty filament box that's missing the bottom side (when flat) on top of it. Place silica, make some holes on the top side. Some youtuber made tests and this method lands pretty nicely in between low-end and high-end dedicated dryers