First print after upgrading to Duet3d WiFi

[briskspirit]

@dc42 I saw your answer in topic https://forum.duet3d.com/topic/8223/extruder-smoothness/2

I am using 1.8deg steppers on both extruders with steps per mm = ~100. (X16 microstepping, I1)
Maybe this is what is going on too?
I have two pancake motors with 0.9deg, but they are short/less powerful (waiting for gears to come)

[dc42]

Is the ringing pattern worse on the X face of the cube, or on the Y face? Whichever face is worse, it's probably the other axis that is ringing.

[briskspirit]

@dc42 Both axis has that ringing with same period but amplitude is worser on the Y face(so X is ringing with more amplitude)

[briskspirit]

What can cause almost the same ringing?

[briskspirit]

So I was a bit angry and furious and crashed my printer )) Some 8mm rods got bent and etc... Long story short: rebuilt my printer with new rods, installed dampers for Y and Z, tightened everything and now at 42mm/s speed I am getting very minimal ringing with very small amplitude(can see barely but can't feel by nail). So rebuilding helped or dampers

[dc42]

I'm glad you solved it.

The major cause of low-frequency ringing on a well-built machine is likely to be the interaction of the elasticity of the belts and the moving mass. That's why it's generally helpful to keep the moving mass as low as possible.