Topics created by buzzby

@engikeneer
The testing continues. Thank you again for your suggestions.
I did a test to see if temps made any difference. Printed a cylinder and went from 200c to 220 in 5c increments every 10mm. Zero no difference in how the seam was printed. Bit surprises it made no difference but a worthwhile test.

I have continued with some box tests. I thought I was making progress but still cannot find a PA setting to get the sword test print I have to not weld itself together and I really don't want to have to use the slicer wipe function as that only works on a retraction. Anyway here are some pics of the box tests

IMG_8045.JPEG IMG_8046.JPEG IMG_8047.JPEG IMG_8048.JPEG

Looked like there was a sweet spot between 0.9 and 1.1 but my print to try and find it didn't really have a huge range of differences.

I found a forum thread here that talks about LOWERING the jerk on the travel axis.

Worth a shot, so i have halved my XYZ (delta) jerk speed from 900 to 450 and did another box test

IMG_8044.JPEG

This looks quite encouraging somewhere between 0.3 - 0.6

On all of the pictures, the black mark shows when the PA value was changed.

I am currently running the same test but with a 30mm cylinder to see if they compare to how the box prints or if it is different.

My bowden tubes are tight in the clips. I haven't yet checked about the backlash but I think in the tests I have done that could have been canceled out. Will check anyway once i stop the next print.

M201 X5000 Y5000 Z5000 E10000 ; Set accelerations (mm/s^2) Used to be 1500 M203 X18000 Y18000 Z18000 E20000 ; Set maximum speeds (mm/min) M566 X900 Y900 Z900 E1000 P1 ; Set maximum instantaneous speed changes (mm/min) M207 S3.0 F5000 T3600 Z0

My current settings. The last picture is using 450 for XYZ jerk values.

Bang bang is not recommended for bed heater in quite some time. It’s likely a zero crossing ssr (I think that’s the right term) so there should be no issues with pwn.

@buzzby said in Trying to tune extruder. What might I be missing:

I have tried using coasting in cura as 0.128, 0.192, 0.256 and 0.512.

Coasting and pressure advance do not play well together. Better to use pressure advance by itself.

@corezair
I don't have an SMD station. Just looking at the price of one, it is probably prohibitive to try and repair. Although I might try with a normal soldering iron.

Not sure if anyone on here would be interested in trying to repair it.
This board is over a year old so suspect no warranty.

@buzzby

Try playing around with negative restart distance (0.05-0.2mm) and see if that helps.

Otherwise, as said earlier, try in slic3r (PE?) and change "default extrusion width" to something like 0.5 or 0.6 and see if helps - It did for me.

Thanks for reporting this, it's a bug. The limit should be 31, and if you specify a higher value in the A parameter then it should set it to 31. I'll fix it in the next release.

Hi,

in my case, i have find it the solution....

THE PROBLEM

In some points of bed, i have hard taps when usin PPO...

THE CAUSE

Some days ago... i changed config.g.... seems the same, but no. Steps for mm, was changed... This caused that head dont move spected, causing hard taps, and problems with prints, as after 20 layers, nozzle touch printed...

THE SOLUTION

Recalibrate steps for mm.

The method used.... bufff. Someone knows how calibrate of precise maner?

Thanks