Z axis speed / Jerk /acceleration

Stevo

Evening all,

Just wanted a little advise on how to tackle a layer change bump down the entire edge of the print at the point layer change happens I suspect the extruder pauses too long whilst the z axis lowers to start the next layer.

I am using S3D and printing inside - out this bump doesn't occur on all the corners like I say just at the point the head pauses whilst the bed lowers.

Would I be looking at the jerk in z axis or speed in Z or both to dial this little fella out ?

Any advise on my settings below would be appreciated please.

M92 X80.00 Y80.00 Z1600.00 E415.00 ; Set steps per mm
M566 X600.00 Y600.00 Z10.00 E300 ; Set maximum JERK speed changes (mm/min)
M203 X6000.00 Y6000.00 Z144.00 E1200.00 ; Set maximum speeds (mm/min)
M201 X1200 Y1200 Z10 E1000 ; Set accelerations (mm/s^2)
M906 X800.00 Y800.00 Z2000.00 E800.00 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30

Phaedrux

Give these a try:

M566 Z120	; Set maximum instantaneous speed changes (mm/min) (Jerk)
M203 Z600	; Set maximum speeds (mm/min)
M201 Z240 	; Set maximum accelerations (mm/s^2)

I have a very heavy and slow Z axis and these are the values I use for print moves. For homing and jogging moves they are a bit lower.