Problems after printing ASA
Hello,
I want to Ask if anyone had the same Problems as me after Printing ASA.
I Printed a few Parts (that print quite long, around 8h Printtime) in Prusa ASA in an unheated Enclosure.
Temperature in the enclosure was 40°
After those prints the extruder has a lot of problems.
The Temperature Settings all seem to be off, i thing the Nozzletemp sensor is broken.
The Arm that presses the Filament against the extrusiongear was warped and could not build up any pressure, the filament (especially TPU and TPE) was sliding.
I printed a new arm (out of ASA hoping its not going to warp) and now the filament is transported correctly
When manually stepping down the temperature around 20° the prints get better, but are still nowhere near the quality they had before.
Can anyone help what else can be broken?
RE: Problems after printing ASA
To Anyone reading this, i was in contact with tec support for 2 days.
They sent me a new Thermistor and that seems to be working. The Thermistor fell apart when i unmounted it, so apparently ASA is to much heat for the thermistor long term.
RE: Problems after printing ASA
To Anyone reading this, i was in contact with tec support for 2 days.
They sent me a new Thermistor and that seems to be working. The Thermistor fell apart when i unmounted it, so apparently ASA is to much heat for the thermistor long term.
I can't really imagine that. I print a lot with PC-CF, PA-CF and ABS - and my thermistor seems to be quite healthy. 🙂 I would assume that you simply had bad luck with your thermistor.
RE:
I had a similar issue after printing ASA, but it turned out to be a rookie error, (I rarely print in ASA and had gotten complacent with the reliability of my Prusa's).
After printing with ASA I then tried printing in PLA, and the results were awful. After a bit of inner thinking I gave the nozzle a good clean at the highest temp I could muster, and all was good in the hood.
I didn't get any warping or other damage, it was just a case that the ASA must have left some residue in the nozzle, and the lower temp of the PLA wasn't shifting it, causing it to extrude badly.
Not saying this was the case in your experience, just something else to be aware of.
RE: Problems after printing ASA
Agreed this is a solution. Lower temp PLA won't clean out / purge high temp filaments. I will purge with PLA on ASA settings, then reload with PLA setting and be good.
I had a similar issue after printing ASA, but it turned out to be a rookie error, (I rarely print in ASA and had gotten complacent with the reliability of my Prusa's).
After printing with ASA I then tried printing in PLA, and the results were awful. After a bit of inner thinking I gave the nozzle a good clean at the highest temp I could muster, and all was good in the hood.
I didn't get any warping or other damage, it was just a case that the ASA must have left some residue in the nozzle, and the lower temp of the PLA wasn't shifting it, causing it to extrude badly.
Not saying this was the case in your experience, just something else to be aware of.
MK3s / My IKEA Lack enclosure
RE: Problems after printing ASA
To Anyone reading this, i was in contact with tec support for 2 days.
They sent me a new Thermistor and that seems to be working. The Thermistor fell apart when i unmounted it, so apparently ASA is to much heat for the thermistor long term.
I can't really imagine that. I print a lot with PC-CF, PA-CF and ABS - and my thermistor seems to be quite healthy. 🙂 I would assume that you simply had bad luck with your thermistor.
I very much hope so! I would like to continue printing ABS and ASA.
Did you encounter any other problems such as warping parts (from the printer)?
My printer is back to normal now and the prints look really great again.
RE: Problems after printing ASA
No, I don't have any problems beyond the usual. 🙂
RE: Problems after printing ASA
Sounds like a faulty unit. I print primarily ASA/ABS on my mk3s+ and haven't had issue like this. Same goes for harder to print filaments like PA or PC. Any prusa should be capable of printing ABS or ASA no problem. I'm glad support was able to help your printing up and running again
RE: Problems after printing ASA
I have my printer in a cheap tent enclosure for now with a reptile heat lamp! So far it's helped tremendously for warping! I'd look into some sort of enclosure with some sort of air cleaning or venting to a window. I guess the last part really depends on where you plan to keep your printer! 🙂
RE: Problems after printing ASA
For printing ASA in an enclosure you can build a Nevermore Mini Filter. For the price of the Prusa Advanced Filtration System, which also needs a separate PSU and Basic Board (ca. 120 € altogether) you can build two Nevermore Minis and have some cash left over. If you source the parts yourself you can get those for about 50 € all in all (even less if you build the basic version without the screen), if you have the necessary tools already, like soldering iron, heat inserts, some wires, WAGOs, shrink tubing, and crimping tools. I have bought the Prusa Filter system together with my enclosures but I never use it because it is so damn loud. But I can compare both systems and their level of annoyance during operation. The Nevermore Mini fan (I use an ARCTIC S4028-15K, 12V running at 5V) is almost silent and if you build the version with the touchscreen display you get visual feedback if there actually are VOCs in the enclosure and on the progress of their removal. The fan is controlled via temp and VOC values of the sensors, totally autonomous. If I put a steel sheet that has just been wiped with IPA into the enclosure the fan springs into action a few seconds later and the sensor values and the fan RPMs go down after a few minutes. You also can see that printing ASA/ABS produces a lot more VOCs than PLA or PETG. The filter removes most of the smell in the room caused by printing ASA/ABS. The only possible con is that you have to build it yourself, which can be also fun, depending on your thumb count. 🙂