israel.n
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Bad first print the Castle

Feb 19, 2018 8:17 pm

What I have to improve?
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Brigandier
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Re: Bad first print the Castle

Feb 19, 2018 8:28 pm

Z-offset is too low. Bring it up until that goes away.
My MK3 Parts: [Bowden] [New Shoes] [TPU Micro Springs]

israel.n
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Re: Bad first print the Castle

Feb 19, 2018 9:05 pm

Brigandier wrote:
Feb 19, 2018 8:28 pm
Z-offset is too low. Bring it up until that goes away.
Thanks. Can you explain how to do that?

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Brigandier
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Re: Bad first print the Castle

Feb 19, 2018 9:10 pm

israel.n wrote:
Feb 19, 2018 9:05 pm
Brigandier wrote:
Feb 19, 2018 8:28 pm
Z-offset is too low. Bring it up until that goes away.
Thanks. Can you explain how to do that?
I would refer to the guide on doing First Layer Calibration, but it's kinda tricky with the built in gcode. I would suggest starting that castle print again, and once it starts printing the menu will have a Live Z Offset Adjust option in the main menu. You can raise and lower the nozzle from there. You need to raise it until the top of your first layer is very smooth, I would suggest raising it until you start seeing holes or have sticking problems, then lower it back down until the holes disappear.
My MK3 Parts: [Bowden] [New Shoes] [TPU Micro Springs]

ario.a
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Re: Bad first print the Castle

Feb 20, 2018 12:40 am

Just my recommendation.

Had the exact same issues with the waves.
Its NOT from the nozzle being too close, its overextrusion on the first layer, since my first layer looked exactly the same and no matter what I did with the z-height, it did change nothing at all.

After a few days of nearly going insane, I noticed that the first layer extrusion in s3d and in slic3r were both set at 150%, which is WAY too much if you have a pretty good first layer.

The filament has nowhere left to go and pushes itself upwards.

I have calibrated my first layer perfectly and run a first layerheight of 105% instead of 150%.

Try that out if you dont get any further.

israel.n
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Re: Bad first print the Castle

Feb 20, 2018 9:43 am

Brigandier wrote:
Feb 19, 2018 9:10 pm
israel.n wrote:
Feb 19, 2018 9:05 pm
Brigandier wrote:
Feb 19, 2018 8:28 pm
Z-offset is too low. Bring it up until that goes away.
Thanks. Can you explain how to do that?
I would refer to the guide on doing First Layer Calibration, but it's kinda tricky with the built in gcode. I would suggest starting that castle print again, and once it starts printing the menu will have a Live Z Offset Adjust option in the main menu. You can raise and lower the nozzle from there. You need to raise it until the top of your first layer is very smooth, I would suggest raising it until you start seeing holes or have sticking problems, then lower it back down until the holes disappear.
Thanks. But why it’s happened just on the small size and not on the all?

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joan.t
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Re: Bad first print the Castle

Feb 20, 2018 10:17 am

Hi Israel,
it is likely that the printed layer started to theright hand side of the picture and progressed towards the left,

is live z is too big a negative number, each successive line pushes the last layer slightly out of alignment and eventually there is too much movement, which causes these ripples. additionally, your print bed may be microscopically higher where the ripples are appearing, this can also cause rippling, and can be adjusted with live 'Z' adjust...

see the thread, 'Life djust, My way' on the forum

an additional LCD menu option allows you to cause differential 'Z' adjustment in 4 areas, left, right back and front.


and if you are brave enough, there is hyperfine bed levelling ( follow the thread on the forum)


regards Joan
I try to make suggestions that I believe to be well founded and safe,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.

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Bigdogbro1
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Re: Bad first print the Castle

Feb 20, 2018 2:44 pm

When you do a live Z adjust are the (-) negative numbers lowering the nozzle closer to the bed?

I am around -600 currently. Is that too large of an adjustment?

Thanks,
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peter.l22
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Re: Bad first print the Castle

Feb 20, 2018 3:38 pm

Bigdogbro1 wrote:
Feb 20, 2018 2:44 pm
I am around -600 currently. Is that too large of an adjustment?
Not necessarily. It depends on exactly how high you assembled your PINDA probe, which is why everyone's live Z will be a bit different.

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Bigdogbro1
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Re: Bad first print the Castle

Feb 20, 2018 4:15 pm

Peter,

Thanks, I set it up with the typical zip-ty process.

When you do a live Z adjust are the (-) negative numbers lowering the nozzle closer to the bed?

Still would like to know about the negative numbers direction for sure.
New to 3D printing, Designed and built CNC Plasma Cutting Table, Motorcycles

Bigdogbro's Adventures
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