PETG first layer issue

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Shelton
Posts: 272
Joined: Thu Jul 12, 2018 8:34 pm

PETG first layer issue

Postby Shelton » Fri Oct 26, 2018 9:59 am

PETG everything else printing perfect but not first layer... any ideas?

IMG_3012.jpeg


IMG_3013.jpeg

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Vicky@Raise3D
Posts: 4414
Joined: Fri Mar 25, 2016 3:54 am

Re: PETG first layer issue

Postby Vicky@Raise3D » Fri Oct 26, 2018 9:55 pm

Have you checked the Z offset and the levelness of the bed, if it is the bottom surface?

Shelton
Posts: 272
Joined: Thu Jul 12, 2018 8:34 pm

Re: PETG first layer issue

Postby Shelton » Fri Oct 26, 2018 10:40 pm

Yes many times. About lirykę może than 0.25 mm.

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Vicky@Raise3D
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Joined: Fri Mar 25, 2016 3:54 am

Re: PETG first layer issue

Postby Vicky@Raise3D » Wed Oct 31, 2018 10:43 pm

Would you like to test printing it with a further distance between nozzle and build surface to compare the result?

Shelton
Posts: 272
Joined: Thu Jul 12, 2018 8:34 pm

Re: PETG first layer issue

Postby Shelton » Thu Nov 01, 2018 6:03 am

It was set for 0.2 but is too low for PETG. But my bed from factory has 0.20 mm corner difference. After adjustment about 0.05 to 0.08 mm.

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jetdillo
Posts: 143
Joined: Mon Jun 12, 2017 5:10 am

Re: PETG first layer issue

Postby jetdillo » Tue Nov 06, 2018 10:21 pm

[quote="Shelton"]PETG everything else printing perfect but not first layer... any ideas?

Your Z-height is too low. You can tell because the pattern on the bottom is squished vs. even.
Here's a IC-puller I printed in MadeSolid PETG. Notice how on the bottom layer, the lines flow evenly back and forth.
20181106_140231.jpg


I would try adjusting your Z-height about a quarter-turn counter-clockwise until you get a first layer that show up consistently like what I've shown above.
HTH


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