What's happening here?

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dklassen
Posts: 147
Joined: Thu Oct 09, 2014 3:46 am
Location: Spring Hill, TN
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What's happening here?

Post by dklassen » Fri Jan 27, 2017 1:41 am

Anyone know what this might be? Z stepper going bad maybe? Might do it 4 or 5 times then it's fine. No issues printing, no apparent binding.

https://www.youtube.com/watch?v=A8qj4d9 ... e=youtu.be

Thanks!

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atomic_peach
Posts: 37
Joined: Sun Dec 04, 2016 2:14 am
Location: Philadelphia, PA

Re: What's happening here?

Post by atomic_peach » Fri Jan 27, 2017 3:49 am

Does it do the same thing without the mic6 plate? It sounds like the motor is skipping and it's immediately when trying to raise the plate after a rapid drop. I'm wondering if it's the inertia of the plate causing or exacerbating this.

dklassen
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Joined: Thu Oct 09, 2014 3:46 am
Location: Spring Hill, TN
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Re: What's happening here?

Post by dklassen » Fri Jan 27, 2017 4:22 am

Hard to say, next time it does it I should take the plate off. I've been using the mic6 plate for nearly a year now, never an issue before.

ksevcik
Posts: 56
Joined: Fri Oct 21, 2016 1:07 am
Location: Houston, TX

Re: What's happening here?

Post by ksevcik » Fri Jan 27, 2017 4:31 am

That's definitely the z stepper missing steps. It might be binding slightly or something. I think you could probably patch it by just reducing the z axis acceleration, or the speed of that move in the start script. That particular move doesn't have to be THAT fast.

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Jules
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Joined: Wed Jan 21, 2015 1:36 am

Re: What's happening here?

Post by Jules » Fri Jan 27, 2017 5:27 am

Make sure the Z screw is clean too. Sometimes it can get a thread wrapped up in there or a buildup of old grease. (I use an old toothbrush to clean that gunk out. it can cause sticking.)

3dPrintingMD
Posts: 277
Joined: Fri Oct 02, 2015 5:37 am

Re: What's happening here?

Post by 3dPrintingMD » Fri Jan 27, 2017 5:47 am

Tell us more, did you mess with the firmware?
M2 - V4, MIC-6 Build Plate, Astrosyn Damper's(X/Y), Rev. E, Geeetech LCD

S3D - FFF Settings https://forum.simplify3d.com/viewtopic.php?f=8&t=2367
Print Quality Troubleshooting https://www.simplify3d.com/support/prin ... eshooting/

dklassen
Posts: 147
Joined: Thu Oct 09, 2014 3:46 am
Location: Spring Hill, TN
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Re: What's happening here?

Post by dklassen » Fri Jan 27, 2017 4:14 pm

Haven't touched the firmware. Everything looks clean to me. I keep it regularly maintained and cleaned.

Here's my start script.

M204 T10000 ; increase default retraction acceleration
M201 X1200 Y800 Z500 ; reduce maximum acceleration to reduce ringing
G28 ; home all axes
G1 Y50 Z0.3 F9600 ; move forward to avoid binder clips
G1 X205 Z10 ; move off platform
G1 Z0.4 ; position nozzle
G92 E0 ; zero extruder
G1 E25 F225 ; purge nozzle
G92 E0 ; zero extruder
G1 X190 Z0.1 E1.0 F1200 ; slow wipe
G1 X180 Z0.25 ; lift

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