New Day... New Problem - Asymmetrical print

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guybrush
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Joined: Tue Feb 27, 2018 6:55 am

New Day... New Problem - Asymmetrical print

Post by guybrush » Wed Mar 07, 2018 3:44 am

Actually the problem is old, but I had bigger problems than this.

The printer is updated with the latest firmware. Used both Cura slicer and the built in slicer for Easy Print.
Same results.

Rectangular objects that where the motors are not moving on both axes are printed approximately ok.

But for example circular objects (see attachment), where the motors movement is combined, aren't round.
Also more complicated objects as benchy are asymmetrically printed with shape problems.
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IMG_7255.JPG
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William
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Re: New Day... New Problem - Asymmetrical print

Post by William » Thu Mar 08, 2018 6:30 pm

I think you can try to increase the voltage of A4988 and then test it
viewtopic.php?f=19&t=17097
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

guybrush
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Joined: Tue Feb 27, 2018 6:55 am

Re: New Day... New Problem - Asymmetrical print

Post by guybrush » Fri Mar 09, 2018 3:14 am

Hi William,

I will try this, I hope it works.
Attached a better screenshot on the issue.
Did someone else got these issues and this voltage increase helped?
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guybrush
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Re: New Day... New Problem - Asymmetrical print

Post by guybrush » Fri Mar 09, 2018 11:50 pm

Increased the power on both X-Y motors. Still same issue.
It seems it is a firmware bug. The g-codes are badly interpreted by the firmware.

Is there any way to flash a "standard" Marlin FW on this printer like on Geeetech Prusa I3?
I don't mind not using the LCD.
As it is now, with this FW the printer is useless.

damdam
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Joined: Thu Mar 15, 2018 5:59 pm

Re: New Day... New Problem - Asymmetrical print

Post by damdam » Thu Mar 15, 2018 6:01 pm

Having exactly the same problem. Geeetech sent me a gcode of a 20mm circle.

Buggy Software or cracked mainboard.

Waiting for troubleshooting...
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guybrush
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Re: New Day... New Problem - Asymmetrical print

Post by guybrush » Sat Mar 17, 2018 9:22 pm

After struggling several days I found the problem.

The reason is backlash.
The fixing on the belt of the Y axis (bellow the bed) had a loose nut/screw and so was not properly fixed.

I removed the loose nut/screw and replaced with something that I've improvised.

The backlash is away. Still getting checksum errors but I least I can use the printer.

These lots it seems have quality issues.

JohnDeere630
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Joined: Sat Oct 01, 2016 8:12 am

Re: New Day... New Problem - Asymmetrical print

Post by JohnDeere630 » Sun Mar 18, 2018 11:16 am

Wow, it seems to be in both axis....I'd try a new mainboard.

ALE5510
Posts: 3
Joined: Tue May 08, 2018 4:47 pm

Re: New Day... New Problem - Asymmetrical print

Post by ALE5510 » Mon May 28, 2018 4:40 pm

Same problem .... the plate in fact seems to do as a "shot" to the right or left when I remove the residues of printing. I will check.

tuningboy
Posts: 1
Joined: Fri Sep 13, 2019 3:48 pm

Re: New Day... New Problem - Asymmetrical print

Post by tuningboy » Fri Sep 13, 2019 3:50 pm

Hello,

I have the same problem can you send me a picture of the nut/screwed that was bad ?

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