Optional filtration unit design error?
I ordered a Core One L. I want to print big ASA objects and I want to do this safe. So I ordered it with the extra filtration unit.
But studying things a bit further I'm very concerned about the way the filtration unit works. It sucks air out of the printer chamber through the filters. So far so good. But it blows this air into the environment. This means new air needs to enter the printer chamber in some way.
But I read that people that use the printer for ASA printing close all little holes so that the chamber temperature can reach the 50-60 degrees, which is needed for ASA. No new air can go into the printer -> filter does not do its job.
So using the filter and reaching a chamber temperature for ASA don't go together. How can we solve this?
Wouldn't it be better when the filtration units blows the filtered air back into the cabin? How could we achieve this?
RE: Optional filtration unit design error?
Main role of the filtration system is to filter out big particles, and some VOC and direct the air to the pipes which direct air outside of the room through the ventilation.
People mostly block holes in the top part of the printer so that the hot air is not escaping on its own.
Holes on the bottom of the printer are useful to allow air to get in, they are pretty small so it's not a major problem.
Either way you want the holes - the fans will generate negative pressure if needed, so that the air is sucked into the printer and gets exhausted through the filtration system, then it can be directed to the ventilation pipes, to avoid getting air out of the printer to the room.
Blowing air back to the cabin could cause drafts that can influence the print, and thus cause warping.
See my GitHub and printables.com for some 3d stuff that you may like.