eSun eBox Pro 3D Printer Filament Dry Box Review

General

• Started printing PETG so I needed a dedicated filament dryer.

• Having a drybox, while it helps, is not really a final solution.

• Once a PETG spool already absorbs a humidity, a drybox with a bunch of silica gel doesn't actually reverse it. You need a dyer.

• Also a misnomer that wet filament doesn't mean it is actually wet on the outside. It is wet on the inside and the only way you know it is wet is if you try to print and you get stringy result

• Anyway, back to this product, for the most part, it works but while it is an active dryer (where you dry and also feed the spool), it is not an airtight container.

• You still need a dedicated storage for that.

• The RH reading is not acurate. It is not just inverse of the temperature.

• So even if you just dried your filament for 8 hours. at 65 degrees and at below RH 20%. Turn it off. Wait for it to be a room temperature. Turn it back again. It will not read at RH 20% but at the relevant temperature. In this case at 35 degrees celsisu it would roughly RH 60%.

• Fortunately, you don't need to dry it again for 8 hours. I tried it running the dryer and print it immediately, even though it is still at 60% RH reading (given that you already dried it before), and it work as expected. No stringing.

• You don't need to turn it off all the time. After the initial drying. I just turn it on for 1 hour then turn it off while it still printing. Still fine. Again because it was already dried before.