Bad print result

I am not sure if its since the last update, but my Benchy from the SD Card is goind wild.

This is Filament from Fillamentum, but with Bambu it looks the same.

What can cause this bad print?

The Filament is from Slot1 from the AMS. I have a self made enclosure, but door and top was open.

Slice your own benchy and try printing, also calibrate your printer first.

I am printing nearly every Filament with the SD Card 20 Minutes Benchy. Really often, it was always perfect. Not this time. I can do another calibration and retest. But my own gcode is not the solution I am looking for, because the gcode from the card works perfect.

I recalibrated the printer and used Bambu Lab Filament in Slot1 of the AMS. Look what happend.

That is not how it was a week ago before I got the AMS.

How did you set your Wall generator ?

Its the gcode from the SD Card which worked properly two weeks ago.

It’s a known issue using the pre-sliced, built-in, models.

Download the stl and re-slice:

Other than as a quick first print with a brand new printer, I don’t understand the fascination with Benchies. For troubleshooting, there are plenty of other models to test a particular print problem.

So, the STL on the card is going wild after a while?

I will print something form Studio. Lets see.


Only partially better.
Benchy STL, 0.16 Optimal settings. Only changed infill to Gyroid.

I think its too hot, probably?

You might check your thermistor in onthe hotend make sure it’s still firmly attached Nd not hanging loose or something.

After 2 weeks it’s possible that your filament is too wet ?

One of the filaments I used was brand new.
Hotend looks good for me.



I just checked everything, scrrewed all together, run a calibration from the printer and start now a print test to get more information.

Lets see.

Most times brand new filament needs dried from my experience.

PLA never for me. Actually after disassembling Hotend and assembled again, the print looks pretty good until now.

I was printing something similar using the PLA support material…Are there different settings to print with just PLA support material vs. PLA?

Support PLA is a special PLA with own settings in the Studio.