My MK3S+ Extruder motor keeps skipping backward and clicking
 

My MK3S+ Extruder motor keeps skipping backward and clicking  

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(@)
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Posted by: @obsessed

That being said, I guess I'll need to switch back, as I do plan on running the MMU2 unit...it's already on order.

Many have the stock E3D heat break and it works fine with their MMU. I wouldn't worry about it. All the step is for accommodating the threadish string at the end of filament that gets unloaded. And if your unloads are consistently that bad, you'll have other problems reloading long before the filament gets back into the heat break.

Posted : 18/05/2021 5:08 pm
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(@)
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@obsessed

For giggles - please zip and upload the project file you are printing in that video.

Posted : 18/05/2021 5:31 pm
Obsessed
(@obsessed)
Eminent Member

@tim-2

I actually included it already earlier in the thread. It's simply the video that accompanied the file I posted earlier.

Posted : 18/05/2021 6:00 pm
cwbullet
(@cwbullet)
Illustrious Member

@obsessed

I will try to print it tonight.

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Chuck H
3D Printer Review Blog...
Posted : 18/05/2021 6:01 pm
cwbullet
(@cwbullet)
Illustrious Member
Obsessed
(@obsessed)
Eminent Member

@cwbullet

Cold Pull actually came out surprisingly clean.  Again, I run it through the extruder first for a cycle or two to clear out the old.  Then I cool it down, then do the heat cycle to cold pull as Tim directed.

 

 

Posted : 18/05/2021 6:48 pm
cwbullet
(@cwbullet)
Illustrious Member

@obsessed

I am dumbfounded.  That doe snot look bad.  

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Chuck H
3D Printer Review Blog...
Posted : 18/05/2021 7:01 pm
cwbullet
(@cwbullet)
Illustrious Member

@adda

I mean the part of the Prusa heatbreak that steps out to over 2mm

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Chuck H
3D Printer Review Blog...
Posted : 18/05/2021 7:54 pm
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(@)
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@obsessed

That is not a clean cold pull. A cold pull will have a nice sharp conical tip at one end.

Posted : 18/05/2021 7:59 pm
cwbullet
(@cwbullet)
Illustrious Member
Posted by: @cwbullet

@adda

I mean the part of the Prusa heatbreak that steps out to over 2mm

I thought it was on my phone then looked at it on my iPad.  Is that a small bubble at the end.  I have never seen a cold pull with that.  

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Chuck H
3D Printer Review Blog...
Posted : 18/05/2021 8:02 pm
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(@)
Illustrious Member

This post was modified 4 weeks ago by --
Posted : 18/05/2021 8:03 pm
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(@)
Illustrious Member

Sorry for the duplications ... but here's what you look for in a Mk3 V6 hot end.

Posted : 18/05/2021 8:08 pm
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(@)
Illustrious Member

In the latest video - what type of plastic is being printed?

Posted : 18/05/2021 8:09 pm
cwbullet
(@cwbullet)
Illustrious Member

@tim-2

It looks like transparent PETG, but looks are deceiving.  Great photos.  I am saving those for the future.  

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Chuck H
3D Printer Review Blog...
Posted : 18/05/2021 8:14 pm
Obsessed
(@obsessed)
Eminent Member

@tim-2

How is this one? It's cleaning filament so not sure if that has something to do with it...it's VERY soft and flexible, so not sure if that is causing the discrepancy.

 

This post was modified 4 weeks ago by Obsessed
Posted : 18/05/2021 8:15 pm
Obsessed
(@obsessed)
Eminent Member

@tim-2

That particular file was Mika3D SilkPLA, if you're asking about the gold colored filament that my skipping video shows.

It does it with every filament I've tried though.

This post was modified 4 weeks ago by Obsessed
Posted : 18/05/2021 8:16 pm
cwbullet
(@cwbullet)
Illustrious Member

@obsessed

Swing and a miss.  It looked very clear to me.  

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Chuck H
3D Printer Review Blog...
Posted : 18/05/2021 8:21 pm
Obsessed
(@obsessed)
Eminent Member
Posted by: @tim-2

Sorry for the duplications ... but here's what you look for in a Mk3 V6 hot end.

Would I really see all that if I did a cold pull on cleaning filament? Wondering if the entire heat break and heatsink don't have time to get up to temp fully.  Should I insert the cleaning filament and let it sit for 20 minutes at temperature before letting it cool down?

Posted : 18/05/2021 8:26 pm
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(@)
Illustrious Member

The process is simple - cleaning filament not recommended for cold pulls - 

  1. load PLA filament
  2. reset printer
  3. wait for nozzle temp shows 30c or less
  4. open idler door
  5. set nozzle to 100c
  6. start pulling on filament when nozzle hits 50c 
    - if you lift the printer off the table, that is just a hair too much pull, but about right
Posted : 18/05/2021 9:03 pm
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(@)
Illustrious Member
Posted by: @obsessed

@tim-2

That particular file was Mika3D SilkPLA, if you're asking about the gold colored filament that my skipping video shows.

Somewhere I saw a FLEX profile, the video is printing too fast for flex, I'd expect hopping extruders.

Posted : 18/05/2021 9:06 pm
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