Comgrow SH02 Filament Dryer Box for Two Spools, 150W PTC Heater
Product description
Some 3D printing setups need a way to dry more than one spool at a time, others need a simpler place to keep a single spool ready. The Comgrow SH02 is built for the first use, with room for two 1KG rolls and two filament outlets for feeding printers while the box is in use.
Its touchscreen presets and adjustable temperature range make it a practical choice for working with several filament types. It also functions as sealed storage, although buyers should weigh its fan noise and mixed reliability reports when deciding where it fits in a printing setup.
Product specs
- Name: Comgrow SH02 Filament Dryer Box
- Type: Filament dryer and sealed storage box
- Capacity: Two 1KG spools
- Power: 150W PTC heater
- Temperature range: 40–70°C
- Compatibility: PLA, TPU, PETG, ABS, ASA, PVA, PC, PA, and PP, 1.75 mm and 2.85 mm filament
- Maximum drying time: 98 hours
- Safety: Heating cuts off if the PTC temperature exceeds 130°C and resumes below 90°C, an alarm sounds if the fan stops
Everyday use
The SH02 has two filament holes designed to pass PTFE tubes through, which lets filament feed toward printers with different extruder positions. That layout is useful when you want to dry two rolls together or keep two printers supplied without moving spools between separate boxes. The lid, base, outlet holes, and bottom sealing plate use sealing rings to help keep moisture out during storage.
A touchscreen provides one-key settings for nine listed filament types, with a preset temperature and time for each. The heater circulates air with a built-in fan. Comgrow states that the box can reach 50°C within 7 minutes and 70°C within 25 minutes, those are stated heating times, not a guarantee of how quickly a particular spool dries. The maximum temperature is 70°C, so the SH02 is best matched to materials and drying routines that fit within that range.
Buyer feedback is not entirely uniform. Some customers say drying helped their print results, while others report filament sticking during printing or multiple failed prints. Fan noise is also a recurring criticism. These reports are useful context, but they do not establish how the box will perform with every printer, filament, or room setup.
What you get
The documented product is a dryer box configured for two spools, with two filament outlets and a touchscreen. Its presets cover PLA, TPU, PETG, ABS, ASA, PVA, PC, PA, and PP. The listing does not specify additional accessories, so the practical appeal here is the combination of drying and enclosed spool storage rather than a larger bundle of stated extras.
Practical questions
Can it dry two spools at once? Yes. Its stated capacity is two 1KG rolls, and it has two filament holes for feeding filament out of the box.
Which filament types have presets? The listed presets cover PLA, TPU, PETG, ABS, ASA, PVA, PC, PA, and PP. The stated temperature range is 40–70°C.
What happens if the fan stops? The product description says an alarm sounds if the fan stops rotating. It also describes an automatic heating cutoff above 130°C and resumption below 90°C.
Should you buy it?
It makes sense if you regularly handle multiple spools, want a dryer that can feed two printers, and can use its 70°C maximum and preset options. Compared with a basic sealed storage box, it adds active heating and timed drying, compared with a more specialized drying setup, the stated temperature ceiling and preset-focused controls may be less suitable for needs outside its listed range. Better avoided if a quiet workspace is essential, since some customers describe the fan as loud. Consider it as a practical two-spool dryer and storage box, not as a guarantee of improved prints or trouble-free feeding.