Dear guys,

we are trying to DIY one of the FDM 3D printers by ourselves but it seems that the sample is not good.

U will see the regular ripples on the surface by our hardware and firmware. However, we just modified the sailfish firmware a little bit.

It spends ur several months to solve this problem but failed, so we'd like to know it there anybody face it before and how to solve it or any suggestion?
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