But there’s no mention of silica gel needed during the drying period. In the manual, Sovol mentions how you can use the filament dryer as a storage container, after you also add the silica gel package you got with the spool. And that’s sort of the reason why you would get a filament dryer: to dry filament. When the filament is dried, water is evaporated from the filament but if the container is closed, the water vapor doesn’t have a way to escape from inside the dryer box. My results with the Sovol Filament Dryer are a bit disappointing, especially for the 10 hour drying period with no silica gel. So I strongly recommend using silica gel packs when you dry your filament because without it you’re mostly wasting time and energy. I also left the container closed over night, and the humidity level stayed the same. I added a few packs of silica gel which has been dried in advance, then started the drying cycle.Īfter 6 hours, the results are much better going from 44% to 8%. To test my theory that the humidity is trapped inside the filament dryer, I repeated the test with three rolls of PLA, PETG and TPU which have been opened for over a year. This result was a bit disappointing but I think I found the issue. I started at 48% humidity and after 10 hours of drying, the humidity level reached 45%. The second test was done with three spools of PETG, this time with a 1KG and two 250g spools. I think this is the reason why I had better results compared to my next test. It’s worth noting that during this time, I opened the cover a few times, to check how hot the temperature inside the dryer is. It started with a 43% humidity level, and after 6 hours of drying at 50 degrees the humidity dropped to 25%. The first test was putting three 250g spools of Devil Design PETG to dry. Testing the drying capacity 6 hour drying time I attached a video to better showcase this in the noise levels sections To fix this issue, I added a small piece of filament on one of the sides to hold the fan in place and eliminate the noise. Unfortunately, this fan is not attached to the plastic case in any way, and this causes annoying vibrations during use. Air circulation fanĪs mentioned, we have a 12V 4010 fan which helps keep the airflow moving inside the machine. The Sovol Filament Dryer also has a hygrometer which tells us the humidity inside the unit, but I don’t really trust it. Here’s a few thermal shots of the heatplate set to 50C: In the back, there’s also a 4010 fan which turns on when the heater is running. Underneath, there’s a circuit heater similar to what you would get with a regular FDM 3D printer which can heat up close to 60C. The spools rest on metallic supports which spin on the integrated bearings. With the Sovol Filament Dryer you can use two spools of filament at the same time (depending on the type of spools you have). The inside of the filament dryer is more interesting.
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