SUNLU Filament Dryer Box for 3D Printer Filament, S1 Plus...

Most Helpful Review

"Using this thing is very confusing to start, and there are not clear instructions included. That being said, I figured it out eventually and am pleased with the results. It does have a fan inside, so the air circulates quite well. I leave a reusable silica gel packet inside to help facilitate the drying process. Once turned on, the only way I have found to turn it off is to let the timer run out. You can adjust the temperature and the timer. Theoretically, it has a hydrometer inside, but I'm not convinced that it is accurate.Interestingly, part of why I purchased this dryer instead of Sunlu's more popular model with the screen on the side is because of the forward-facing screen, but in my setup, I would have benefited from the side screen more. since the filament has to bend in strange ways to get to my printer if I want to see the screen. It is a bit noisy, though quieter than my old Ender 3 V2 Neo and my P1S. The frequency at which it operates is the annoying part; it gives me a migraine, and it sits right behind my desk.There are two slots for filament built into the dryer. One on the front top curve of the lid, and one right where the lid meets the body. This second slot has an included plug to keep humidity out, but the plug falls out pretty much every time I open it. More annoyingly, it likes to fall inside of the dryer and has almost fallen into the vent hole many times. Both slots can accommodate a PTFE tube like the spares included with a Bambu AMS. This is necessary for proper operation in my opinion as the slots by themselves are at awkward angles and risk bending or breaking filament/putting unwanted strain on the extruder motor. There are very small PTFE slices (??) included with the dryer that I believe are supposed to fit into those slots to soften their edges, but it doesn't help much.I haven't seen condensation build up inside when I'm drying filament, even without a silica packet, but I have recovered an old roll of PETG and several rolls of PLA, and now printing with TPU is much easier.All of this is to say that it does its job quite effectively, but I wish a company would be more intentional in their design process."