Best settings for stepper motors ?

StefaanC

this stepper for towers : Nema 17 Schrittmotor Bipolar 2A 59Ncm 48mm Körper 4-Leiter.

Manufacturer Part Number 17HS19-2004S1
Step Angle 1.8°
Step Accuracy 5%
Holding Torque 59Ncm(83.6oz.in)
Rated Current/phase 2.0A
Phase Resistance 1.4ohms
Voltage 2.8V
Inductance 3.0mH±20%(1KHz)
Weight 400g

This one for extruder : 5:1 Planetary Gearbox High Torque Nema 17 Stepper Motor 1.68A DIY CNC.
Manufacturer Part Number 17HS19-1684S-PG5
Motor Type Bipolar Stepper
Step Angle(W/O Gearbox) 1.8°
Holding Torque 2Nm
Rated Current/phase 1.68A
Phase Resistance 1.65ohms
Recommended Voltage 12-24V
Inductance 2.8mH±20%(1KHz)
Gearbox Type Planetary
Gear Ratio(Exact Gear Ratio) 5 + 2/11
Efficiency 90%
Backlash at No-load <=1°
Max.Permissible Torque 2Nm(283oz-in)
Moment Permissible Torque 4Nm(566oz-in)
Shaft Maximum Axial Load 50N
Shaft Maximum Radial Load 100N

dc42

And what motor currents have you set in your M906 command in config.g? I suggest between 1300 and 1600mA for those tower motors if you are using the Duet WiFi, and about 1000mA for the extruder.

EDIT: I see you have 1000mA for the axis motors, so you should increase that.

elmoret

Looks like quite a bit of over extrusion also, could be catching an edge.

StefaanC

M350 X16 Y16 E16 I1 ; Set 16x microstepping with interpolation
M92 X80 Y80 Z80 ; Set axis steps/mm
M906 X1000 Y1000 Z1000 E800 I60 ; Set motor currents (mA) and increase idle current to 60%
M201 X1000 Y1000 Z1000 E1000 ; Accelerations (mm/s^2)
M203 X20000 Y20000 Z20000 E3600 ; Maximum speeds (mm/min)
M566 X1200 Y1200 Z1200 E1200 ; Maximum instant speed changes mm/minute

iDevelo

Do you have an E setting for M92 in your config file?

iDevelo

Ok I see you do further down. Scrap that!

iDevelo

Have you checked your esteps?

Dougal1957

You don't appear to have set a Microstepping for your Z Axis in the M350 line not sure if this would cause it or not TBH but worth a try?

StefaanC

M350 what do i put in this line ? i did make not any changes here .

dc42

If you don't have a M350 command then it defaults to 16x microstepping with interpolation to 256x, which is what most people use.

I think it's a combination of over-extrusion as Tim pointed out, causing the nozzle to snag on the print, and insufficient motor current.

You have your extruder steps/mm set to 663, which is about right for the RepRap Mini Geared Extruder (which has a gear ratio of around 5:1) but too high for most other extruders. So I repeat idevelo's question: have you calibrated your extruder steps/mm?

Also I suggest you increase the XYZ motor current to 1300mA (M906 command in config.g).

StefaanC

ok i give a trie to change motors to 1300 and extruder to 663

StefaanC

I am manegd to print the lizard.gcode my tower are on 1000mA extruder 800mA
extruder steps/mm set to 500 . printhead E3D volcano 0,8mm
only issue i have was the temp. setting in the lizard gcode was set too low , i had continues put it back To 210° els it would not stick to my buildtac heatbed .

see video :
https://youtu.be/hFBDHyYQpVE