Pressure advance calibration, the speed maxes out at 25mm/s

zzing

It was in homedelta.g

Is there a way to have this thing save some settings like saving them onto a stack, changing them, and popping them off after?

Phaedrux

I don't know why you'd have jerk and acceleration values for the extruder in homedelta.

If you need to change a value temporarily, just send the modified value, do what you need to do, and then set it back again. No stack needed.

If you want to set a default value often and in many places you can use a macro for that. Have the command you want in the macro and then you can call it from other macros with M98 Pmacroname.g

zzing

It was generated by the configuration. I removed the E values from there.

Now after I set:

M566 X1200.00 Y1200.00 Z1200.00 E200.00 P1
M201 X3000.00 Y3000.00 Z3000.00 E500.00

For the range of PA values 0.5 to 2.5, something interesting happened.

Above S0.5, there is a lot more vibration. At no place does the seam reduce much, it is always there. Starting at S1.25 the corners start to deteriorate, except for the one immediately after the seam. It definitely just looks as if it stops extruding in ever increasing distances from the corners affected.

Phaedrux

200 and 500 is still an order of magnitude too low.

zzing

When I was using thousands the extruder was making a lot of noise. I can study it a little more tomorrow to find out what values it happens at.

Phaedrux

There will be some more noise from the extruder as it pulls back rapidly.

It would help to get some more details about your setup. Config.g, retraction settings, extruder type.

zzing

I posted my config: https://gist.github.com/madebyjeffrey/883d9b626b647376cd3134a3569f2777

The acceleration and jerk values for the extruder are not totally up to date. Should be the 200 and 500 mentioned above.

Retraction presently is 2mm @ 40mm/s - set in slicer.

Extruder is a bondtech connected to a 600mm bowden tube to the smart extruder with v6 and a .35 nozzle attached.

zzing

I have finally gotten some results with acceleration of 3000, and jerk of 400.

Any higher of a jerk and it makes too much noise, 400 still has some noise but it is almost reasonable.

In my test I had the corners progressively get worse, and finally the Z seam.

At no point did the Z seam reduce amount.

I figure a good value is roughly in the 0.5 to 0.8 range, and I am testing that now. The documentation seems to suggest 0.5 is a reasonable place to be, which looks right. Although it is questionable if there will be a way to really see much difference here.

I am also looking for other strategies to reduce the z seam as well.

Phaedrux

I'd experiment with faster retraction speed as well.

zzing

I cannot say that it is perfectly calibrated, but I have s3d and prusaslicer producing reasonably good models on some basic calibrations. So this might be sufficient.

Phaedrux

Some days that's the most I can hope for.