Issue printing any object on my M2

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ratslayer
Posts: 3
Joined: Sat Mar 16, 2019 7:13 pm

Issue printing any object on my M2

Post by ratslayer » Sat Mar 16, 2019 7:47 pm

Any idea what might be causing this? I fired up the printer after about two months of inactivity and
now all the prints keep slowly shifting over to the right. It was printing fine before. This happens with
anything I try to print.

The objects render correctly but do not print correctly. See images below.

I have tried with Pronterface/Slic3r on both Windows and Linux (multiple versions as well).
They all give the same results. I am using the M2 default slicer configs from the wiki.

I am running the latest version of the firmware for my printer.

M2 with the following config
  • Sliver Z-axis motor
  • 24volt PS
  • Z-min top
  • v3b hot-end
Printer startup message:

Code: Select all

Connecting...
start
Printer is now online.
echo:Marlin: 1.0.0 RC2 for MakerGear M2
echo: Last Updated: 2012-05-30 | Author: johnny
echo: Free Memory: 4775  PlannerBufferBytes: 1232
echo:Using Default settings:
echo:Steps per unit:
echo:  M92 X88.88 Y88.88 Z400.00 E471.50
echo:Maximum feedrates (mm/s):
echo:  M203 X500.00 Y500.00 Z250.00 E200000.00
echo:Maximum Acceleration (mm/s2):
echo:  M201 X9000 Y9000 Z30 E10000
echo:Acceleration: S=acceleration, T=retract acceleration
echo:  M204 S3000.00 T3000.00
echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum xY jerk (mm/s),  Z=maximum Z jerk (mm/s)
echo:  M205 S0.00 T0.00 B20000 X20.00 Z0.40 E5.00
echo:PID settings:
echo:   M301 P25.89 I1.94 D86.53
echo:SD card ok
Images:

https://imgur.com/1KRCRV7
https://imgur.com/vmKD5tE

sTaLa
Posts: 43
Joined: Tue Jun 14, 2016 3:01 am

Re: Issue printing any object on my M2

Post by sTaLa » Tue Mar 19, 2019 2:10 am

My guess would be a loose belt or something like that on the axis where you have trouble. It must be skipping teeth.

airscapes
Posts: 321
Joined: Wed Jan 31, 2018 11:36 pm

Re: Issue printing any object on my M2

Post by airscapes » Tue Mar 19, 2019 3:51 am

pully is held in place with a set screw on a flat spot of the shaft.. Could have come loose..

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ednisley
Posts: 1061
Joined: Fri Apr 11, 2014 5:34 pm
Location: Halfway up the Hudson
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Re: Issue printing any object on my M2

Post by ednisley » Tue Mar 19, 2019 4:09 pm

ratslayer wrote:
Sat Mar 16, 2019 7:47 pm
I fired up the printer after about two months of inactivity
What it's not:
  • software
  • firmware
  • slicing
  • model
So, if you changed any of those, change them back.

Because all the layers "look good", apart from being in the wrong place, it's a classic nozzle-hitting-cooled-plastic problem, which suggests:
  • the filament isn't what it used to be: wetter / dryer / aged
  • the room isn't what it used to be: warmer / cooler
  • the printer isn't what it used to be: mechanical problems
The X axis collision starts on the first layer, so it's not the filament or room temperature.

Verify the grub screw in the X-axis pulley is tight, then proceed.

The first layers look entirely too thick, so I'd suspect the Z-axis home position isn't where it should be:
  • Verify the Z-axis switch clamp tightness
  • Re-set the switch position = Z-axis home position to whatever it was you used last year
  • Print a calibration square, verify actual height, adjust Z-axis offset as needed
After you have the offset set correctly, verify the Extrusion Multiplier, too.

ratslayer
Posts: 3
Joined: Sat Mar 16, 2019 7:13 pm

Re: Issue printing any object on my M2

Post by ratslayer » Tue Mar 19, 2019 10:22 pm

Thanks for all the feedback!

I found the following

- Set screw on the pulley was loose. Pulley was tight but could see evidence of spinning on the shaft.
- Couple of fasteners were loose on the extruded assembly

I am going to disassemble everything and clean, lube and tighten.

Will provide a final update once that is complete and I can test it.

—samd

ratslayer
Posts: 3
Joined: Sat Mar 16, 2019 7:13 pm

Re: Issue printing any object on my M2

Post by ratslayer » Wed Mar 20, 2019 8:23 pm

This issue has been resolved. The printer is working as expected after tightening the pulley set screw and other fasteners.

Thanks again for the help!

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