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Problems after printing ASA  

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Christophe Gateau
(@christophe-gateau)
Active Member
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?

 

Posted : 08/04/2024 10:11 am
Christophe Gateau
(@christophe-gateau)
Active Member
Topic starter answered:
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.

 

Posted : 18/04/2024 2:27 pm
Zappes
(@zappes)
Reputable Member
RE: Problems after printing ASA
Posted by: @christophe-gateau

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.

My models on Printables
Posted : 18/04/2024 3:10 pm
jurassic73 and Jay liked
AndyInSwindon
(@andyinswindon)
Trusted Member
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.

This post was modified 1 month ago by AndyInSwindon
Posted : 20/04/2024 9:50 am
jurassic73
(@jurassic73)
Estimable Member
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.

Posted by: @andyinswindon

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

Posted : 30/04/2024 3:51 pm
Christophe Gateau
(@christophe-gateau)
Active Member
Topic starter answered:
RE: Problems after printing ASA

 

Posted by: @zappes
Posted by: @christophe-gateau

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.

Posted : 01/05/2024 11:10 am
Zappes
(@zappes)
Reputable Member
RE: Problems after printing ASA

No, I don't have any problems beyond the usual. 🙂

My models on Printables
Posted : 02/05/2024 8:08 am
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