DAA Ringing help please

Paskal

Hi,
I have a problem tuning my printer. This is a Hypercube Evolution with 17 hs4401 engines. Settings here. Hotend is E3D V6 with BMG.
Thank you for the advice.

config.g Config file

Phaedrux

https://forum.duet3d.com/topic/20791/daa-ringing-help-please

Take a look?

Paskal

That's exactly what I was looking at, but I don't know what the appropriate settings are for my engines and printer.

Phaedrux

Well no one does without some testing. In that thread there are some suggestions made on how to find good results.

I think the hypercube design is prone to ringing due to the heavy rods. There is a lot of mass to sling around with only printed parts to hold it back, so you'll likely be limited to low jerk and accel values for external walls if you want to eliminate the ringing effect. Most slicers allow you to set separate jerk/accel values for different print moves. So you can have slower outer walls and faster for the rest where looks don't matter.

I think a good place to start would be 600 jerk and 600 accel.

Print a ringing tower and use various values along the way to try and find a good one.

Paskal

If I understand correctly M201 xy600 and M566 xy600

Paskal

Phaedrux

yes to M201 and M566
and those speeds look reasonable.

Paskal

Thanks, I'm going to check out some script.

Paskal

Is it right for the test?

; 0.2mm layer, 8 bands 5mm each, total height 40mm
{if layer_num== 1}M572 D0 S0.06
{elsif layer_num== 25}M204 P300
{elsif layer_num== 50}M204 P400
{elsif layer_num== 75}M204 P500
{elsif layer_num== 100}M204 P600
{elsif layer_num== 125}M204 P700
{elsif layer_num== 150}M204 P800
{elsif layer_num== 175}M204 P900
{elsif layer_num== 200}M204 P1000
{elsif layer_num== 225}M204 P1200
{elsif layer_num== 250}M204 P1400
{endif}

Phaedrux

Yes that should work to change the print acceleration

Paskal

P300 -> P1400 ( +100 )

P1500 -> P2400