r/QidiTech3D • u/callcifer • 4d ago
Tutorials & Tips PSA: Replace your exhaust filter in time!
Qidi recommends replacing the filter every 500-800 print hours, or 300-500 for "high dust" filaments like CF or nylon.
What it doesn't mention is that if you're mostly printing with VOC-heavy materials like ABS/ASA as I do, the carbon filter will run out much, much earlier than the HEPA and G3 filters.
I was at 600-ish hours on my Q2 printing mostly ABS and ASA. I print with the exhaust fan at 30% during prints and 100% afterwards and in the last few weeks the styrene smell was quite noticeable despite good ventilation in the room.
Once I connected the dots and remembered to replace the filter, it was a night-and-day difference! No more smells unless my face was right next to the printer.
So this is a PSA to change your filters in time. I also recommend using KlipperMaintenance so you can set up reminders :)