Vertical Banding Revisited

[Lightpath]

Sliced with kiss with mhackney's settings, printed on my v2 with Duet:

http://i.imgur.com/WRBxGUF.jpg" onclick="window.open(this.href);return false;

http://i.imgur.com/XYHBZlt.jpg" onclick="window.open(this.href);return false;

I'm seeing vertical banding as well, but I'm pretty happy with it.

[bot]

I've found that certain combinations of low m566 and low m201 settings causes vertical banding like that with the duet. Try increasing the accel and jerk values and/or decreasing the perimeter feedrate.

[3D-Print]

I will reprint this today. My vertical banding is markedly improved and almost gone with the Duet and same printing settings using MatterSlicer. I do have some very subtle banding that persist and this is at transition points in the print (right at a corner/edge) where there is a change in motion or speed.

What are your M566 and M201 settings as a start point?

Thanks,

[Lightpath]

I have mine all set to zero for m566, but those settings are so specific to the actual printer... Does anyone have a good way of accurately measuring this? I'm going to do some more googling but that setting does look tough to nail down accurately...

Edit: I have M201 set to 1000 for each.

[bot]

If you have m566 set to zero, this is your probolem. Try m201 at 1000, and m566 at 1200 just as a starting point.

[Lightpath]

In today's lesson I learned that reading is hard, and that I'm better off using search instead of eyeballing the file for the value I need. Here is how I have these set presently, they are exactly your values:

M566 X1200 Y1200 Z1200 E1200 ; Maximum instant speed changes mm/minute
M201 X1000 Y1000 Z1000 E1000 ; Accelerations (mm/s^2)

[3D-Print]

Here are my settings.

M566 X1300 Y1300 Z1300 E1300 ; Maximum instant speed changes mm/minute
M201 X1100 Y1100 Z1100 E1100 ; Accelerations (mm/s^2)

Again this is much better with the Duet. Still see some inconsistencies at the edges. Maybe a bit more tweaking will resolve these edge irregularities?? As part of this I still am using the stock X, Y and Z-stepper setup.

Edits: Can't type!!! Thus I fixed a couple of sentences.

[bot]

The irregularities at the edges are referred to commonly as "ringing" or many other names. This is caused by a lack of stiffness and rigidity in the system overall. When the toolpath changes direction suddenly, there is leftover inertia in the previous direction of travel, hence the rippling. Without making the machine more rigid (hard on a delta) the best solution is to lower accel and jerk values as low as practical and to command slower feedrates for perimeters in your slicer. Putting the accel and jerk (m566) values too low will cause miserably long print times, and other artifacts, so I suggest using a fairly standard/aggressive acceleration value with lower commanded feedrates for sensitive areas. I'm still experimenting with this myself, but I find that having a constant speed for the perimeter, where there is barely any slowing and stopping due to accel/jerk values, is ideal for reducing the ringing and other related artifacts (corner blobs).

[3D-Print]

Awesome. Thank you!