Strange printing pattern.

Does anyone know what this strange printing pattern on the right is and what causes it? I'm printing PLA, 65deg print bed temp for first layer, and 205 nozzle temp.

What type of printer was it printed on?

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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dc42
What type of printer was it printed on?

It is a kossel 2020 delta printer.

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dc42
What type of printer was it printed on?

It is a kossel 2020 delta printer.

It's under-extruded on the right.

I thought it might be a delta, that's why I asked. Here are some possible causes:

1. Step size too large, leading to poor vertical resolution. Make sure you have at least 16x microstepping. Your steps/mm should be at least 80.

2. Motor currents too low resulting in too little torque and inaccurate positioning.

3. Delta segmentation. To reduce it, you can reduce the printing speed or increase the segments/second in the firmware config. Or use an electronics and firmware combo that does delta movement without using segmentation.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].