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[Solved] SL1 hammering noises - is this normal?  

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GrimbiXcode
(@grimbixcode)
Active Member
SL1 hammering noises - is this normal?

Hi everyone

My self-assembled SL1 makes hammering noises after the first  5 to 10 layers. At first it starts with one beat per layer and increments after  few layers. In the video you can see/hear 3 beats. I can't imagine this is normal. Am I wrong?

I already tried to fix in with the troubleshooting guide form prusa ( https://www.prusa3d.com/loud-noises-from-printer/), but I couldn't resolve it. Firmware: 1.3.3 and a clean sensor.

I did open the black cover from the printer while running to check the printbed mechanism, but nothing is blocking. It seams that the stepper motor from the printbed does this on purpose.

Video: Hammering Noises

Posted : 08/05/2020 2:40 pm
JoanTabb
(@joantabb)
Moderator
RE: SL1 hammering noises - is this normal?

Hi Grimbix, 
I would say that is not normal... 

but I have no idea what the cause is. 

Possibly the Tilt motor stalling and clicking back to the last position, is anything getting hot? maybe expansion is causing the display platform to be too high after initial calibration? 

I haven't used my SL1 for a long time, because I have not been well, (and I am locked down away from home) so the firmware may have changed
you could try re calibrating with the display platform  a tiny bit lower and try a new print. 

Other than that I have no clue, sorry!

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 08/05/2020 3:02 pm
Lichtjaeger
(@lichtjaeger)
Noble Member
RE: SL1 hammering noises - is this normal?

From the pictures, I can see, that the tilt platform doesn't reach the level of the frame. Looks like the build platform is to low or there is something in the tank. Luckily you could hear that hammering instead of the cracking of the LCD.

Check if you need to clean the FEP and do a recalibration of the printer.

Posted : 08/05/2020 3:19 pm
GrimbiXcode
(@grimbixcode)
Active Member
Topic starter answered:
RE: SL1 hammering noises - is this normal?

@joantabb

Thank you for your blazing fast answer.

There is nothing getting  hot. I have to correct my post: My print bed is not the problem. It's the display platform. I wrote it wrong.

The crazy thing is that the printing works.

I did a recalibration but the problem still occurs.. It still the same pattern.

 

@lichtjaeger

Thank you too for your answer.

The platform does not reach the level, because the printing process has already passed the first few percent.

This post was modified 2 years ago by GrimbiXcode
Posted : 09/05/2020 9:26 am
GrimbiXcode
(@grimbixcode)
Active Member
Topic starter answered:
RE: SL1 hammering noises - is this normal?

Now, I'm printing the Prusa Clay Army as a test and there is no hammering noises anymore.

Could it really be a slicing problem? Has anyone already had a similar experience?

I will now retry and reslice the object. The results will follow.

Posted : 09/05/2020 10:39 am
diplomat3000
(@diplomat3000)
New Member
RE: SL1 hammering noises - is this normal?

May the noise comes from peeling of a fresh layer from the FEP film?

As bigger the surface, as louder is the noise.

A new print starts with the skirt layers. These layers have bigger surface than any layers later. This is why you hear the noise only for the first layers.

If not using a PRUSA-prepared material setup, you may should adjust the shutter time for 1st layer down, means as longer a layer cures, as harder it is to peel of the FEP film.

Posted : 22/06/2020 1:10 pm
JoanTabb
(@joantabb)
Moderator
RE: SL1 hammering noises - is this normal?

@diplomat3000

Possibly the buildplate is too low.

Try re calibrating

 

Regards Joad

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 22/06/2020 3:27 pm
GrimbiXcode
(@grimbixcode)
Active Member
Topic starter answered:
RE: SL1 hammering noises - is this normal?

I'm sorry for my late reply. I now know what was wrong: The layer hight was too thin (0,025 -> 0.035 - ok). With a thicker setting it had worked. It is only an assumption, but maybe it would have worked with a shorter exposure time.

Thank you all anyway.

Posted : 25/06/2020 9:22 am
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