Advanced Filtration System - chamber temp issues?
I want to start printing some nylon filament, and don't have any ventilation option other than a exhaust fan in the head a few feet from where the printer sits. So I had my name on the backorder list at printed solid which came up as available today. I ordered it, but printed solid takes a couple of days to process so I can always cancel if there is a better solution.
I've read its effective enough at filtration, but introduces some chamber temp control issues. I never, ever print PLA, so that will not be an issue for me, but I do print a lot of PETG and PCTG. Will I have any trouble with that and the AFS kit?
Are there any other just as, or more effective solutions I should be looking at?
RE: Advanced Filtration System - chamber temp issues?
I have the AFS on my printers (2 core one). I print mostly PLA with some PETG. I've never had any issues with chamber temps, even during summertime. I think it works quite well and cuts the smell down to near zero. I'm happy with my purchase.
RE:
Thanks. Chamber temps are more important for high temp filaments like polycarbonate or nylon (and others). But good to hear your PETG experience is positive.
I have the AFS on my printers (2 core one). I print mostly PLA with some PETG. I've never had any issues with chamber temps, even during summertime. I think it works quite well and cuts the smell down to near zero. I'm happy with my purchase.
RE:
I want to start printing some nylon filament, and don't have any ventilation option other than a exhaust fan in the head a few feet from where the printer sits. So I had my name on the backorder list at printed solid which came up as available today. I ordered it, but printed solid takes a couple of days to process so I can always cancel if there is a better solution.
I've read its effective enough at filtration, but introduces some chamber temp control issues. I never, ever print PLA, so that will not be an issue for me, but I do print a lot of PETG and PCTG. Will I have any trouble with that and the AFS kit?
Are there any other just as, or more effective solutions I should be looking at?
If you want to print nylon then make sure you have a decent filament dryer, one that can reach at least 80°.
RE: Advanced Filtration System - chamber temp issues?
Yes I do. Thanks. As well as a Bambu AMSHT (high temp) on my P2S which I can use dry as well. But back to my original question. It looks like the AFS extracts air from the chamber, and vents outside. I've seen posts here that claimed it recirculated air, but looking at the design and install manual, that's just not possible. The filter clearly extracts chamber air and vents it externally.
So how can this function effectively by filtering enough air without creating negative pressure which would draw outside air into the chamber, and still maintain the heat necessary for proper printing of high temp stuff? That's the part I don't get, and why some of the other solutions (not made for Prusa printers unfortunately) seem to be better solutions, as they are 100% recirculating.
I want to start printing some nylon filament, and don't have any ventilation option other than a exhaust fan in the head a few feet from where the printer sits. So I had my name on the backorder list at printed solid which came up as available today. I ordered it, but printed solid takes a couple of days to process so I can always cancel if there is a better solution.
I've read its effective enough at filtration, but introduces some chamber temp control issues. I never, ever print PLA, so that will not be an issue for me, but I do print a lot of PETG and PCTG. Will I have any trouble with that and the AFS kit?
Are there any other just as, or more effective solutions I should be looking at?
If you want to print nylon then make sure you have a decent filament dryer, one that can reach at least 80°.
RE: Advanced Filtration System - chamber temp issues?
For certain materials that require a well maintained and constant chamber temp I turn the filtration fan off completely until after the print.
To answer your question though, it doesn't recirculate the air like a BL printer.
RE:
So how can this function effectively by filtering enough air without creating negative pressure which would draw outside air into the chamber, and still maintain the heat necessary for proper printing of high temp stuff? That's the part I don't get, and why some of the other solutions (not made for Prusa printers unfortunately) seem to be better solutions, as they are 100% recirculating.
I think the "solution" is that the AFS only needs to create a weak airflow. The requirement is not to create clean air inside the chamber, but only to avoid air leaking out into the room through the small gaps in the enclosure. So just a little bit of airflow -- enough to ensure that no significant amount of air diffuses out through the gaps -- will do. There is no need for "x-fold air exchange per hour inside the chamber".
The "little bit of airflow" will mean some loss of heat via the air, but it is probably not a dominant effect compared to the loss via conduction through the metal enclosure. It seems that an adequate compromise between minimizing leakage of contaminants and minimizing heat loss can be found, although it won't be perfect for either variable.
RE: Advanced Filtration System - chamber temp issues?
Interesting, I didn't think that way. Of course! All you need is ever so slight negative pressure to keep the bad stuff inside. Thank you, that makes sense.
So how can this function effectively by filtering enough air without creating negative pressure which would draw outside air into the chamber, and still maintain the heat necessary for proper printing of high temp stuff? That's the part I don't get, and why some of the other solutions (not made for Prusa printers unfortunately) seem to be better solutions, as they are 100% recirculating.
I think the "solution" is that the AFS only needs to create a weak airflow. The requirement is not to create clean air inside the chamber, but only to avoid air leaking out into the room through the small gaps in the enclosure. So just a little bit of airflow -- enough to ensure that no significant amount of air diffuses out through the gaps -- will do. There is no need for "x-fold air exchange per hour inside the chamber".
The "little bit of airflow" will mean some loss of heat via the air, but it is probably not a dominant effect compared to the loss via conduction through the metal enclosure. It seems that an adequate compromise between minimizing leakage of contaminants and minimizing heat loss can be found, although it won't be perfect for either variable.