Venting 3D printer

3D SLA printers that use liquid resin are the ones needing venting, at least that's what I've read.  Have a coworker who has printed a few things for me using a filament 3D printer (a Bambu Lab model) and he says he doesn't need venting.

depends on the quality of the resin.

most cheaper resins require venting or some elastic resins do as well.

Otherwise, I have not vented any of the FormLabs resins since 2015.

I've read that venting might be needed for certain FDM materials, but the only two I've used so far are PLA and PETG, neither had enough fumes for me to worry about it.  When I get to ABS or nylon, I have a venting scheme worked out with an unused outside vent pipe from my back workshop.

As I understand it, resin gets vented and ABS printed on FDM gets a carbon filter or venting.

I would be much more concerned if I were printing 24/7. I wouldn't want to work in a print farm of resin or FDM (even PLA) unless it was vented or I was wearing a mask for fine particulates. This topic always fascinates me. I had great-great uncles with 40+ years in a coal mine and lived into their 90s without any problems. I worked with cigarette smokers that had over 20 years in a foundry with silica. I was a short distance from the East Palestine fume cloud and never noticed a thing while other people couldn't even go outside from it.

I don't think there's any harm in venting. On the one hand, you'll be safe if we do find out the microplastics/fumes are harmful. On the other hand, you can microwave sauerkraut in your shop without a care if we find out the microplastics/fumes are harmless.

I have a resin printer. My understanding is the resin fumes are toxic. I purchased a grow tent, a 4" diameter flexible duct, and a small 12v fan with a sleeve that fits inside the dryer duct. The grow tent has openings to accept the duct. The printer is inside. I print without the fan running and the tent zipped up. When printing is complete, I exhaust the tent to the outside through an open window.

FDM, Not Vented... although, I could if needed.  I use PETG, PLA, TPU, Nylon and Delrin.   I'm not igniting it and I can't smell it.  Then again, I'm usually far-off doing some other chore when printing.

Dennis, being open-air, I'm sure you don't vent!   I think the add-on carbon filter on the back of my K1C will do if I ever decide to try some of the stinkier filaments.  Gotta' master working with the generic stuff first.

I am going to move my printer into the back room, that will help as well.

I've used the carbon filters with my resin printers which are enclosed.  My FDM printers are open frame and the small filters would not be effective.

Jan