Filament is escaping the extruder idler

[ManuGithubSteam]

As you can see the filament is escaping the idler to the side. This leads to the phenomena that there is no more extrusion taking place and the print is ruined.

I made a fix for it here but wanted to raise the issue to fix it at the source. (I cant do openscad so i fixed it in tinkercad): https://www.thingiverse.com/thing:3459378

[revarbat]

Ah. Your drive gear doesn't have the self-centering groove that the mk8 drive gear has. https://folgertech.com/products/mk8-drive-gear-for-reprap-extruder-5mm-bore-and-7mm-effective-dia-mk-8

[ManuGithubSteam]

Hi Revar,

I was under the impression, that the groves in that gear would off center the filament path into the extruder. And did not use it. Is this the case? I just did a visual check...

Have a nice day Manuel

On Sat, 23 Mar 2019, 06:34 Revar Desmera, notifications@github.com wrote:

Ah. Your drive gear doesn't have the self-centering groove that the mk8 drive gear has.

https://folgertech.com/products/mk8-drive-gear-for-reprap-extruder-5mm-bore-and-7mm-effective-dia-mk-8

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[revarbat]

You can just re-center the drive gear groove over your filament path by re-adjusting where it is on the motor shaft. Up to and including turning it around backwards. Shouldn't need to, though. In any case, as you've found out the hard way, the groove keeps it in line.

• Revar

On Mar 23, 2019, at 2:44 AM, Manuel notifications@github.com wrote:

Hi Revar,

I was under the impression, that the groves in that gear would off center the filament path into the extruder. And did not use it. Is this the case? I just did a visual check...

Have a nice day Manuel

On Sat, 23 Mar 2019, 06:34 Revar Desmera, notifications@github.com wrote:

Ah. Your drive gear doesn't have the self-centering groove that the mk8 drive gear has.

https://folgertech.com/products/mk8-drive-gear-for-reprap-extruder-5mm-bore-and-7mm-effective-dia-mk-8

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[ManuGithubSteam]

Hello Revar,

I know but I mean not in the X direction where I can slide the gear into position. I mean in the y direction. So to speak that the groved gear "hole" (seen from top) is not centerd on the hole below because of the groved out material. As I see it with the grove it is not a straight line anymore. But I could be wrong.

Also: in the assembly manual the gear looks more like mine and not a groved one. Manu

On Sat, 23 Mar 2019, 10:47 Revar Desmera, notifications@github.com wrote:

You can just re-center the drive gear groove over your filament path by re-adjusting where it is on the motor shaft. Up to and including turning it around backwards. Shouldn't need to, though. In any case, as you've found out the hard way, the groove keeps it in line.

• Revar

On Mar 23, 2019, at 2:44 AM, Manuel notifications@github.com wrote:

Hi Revar,

I was under the impression, that the groves in that gear would off center the filament path into the extruder. And did not use it. Is this the case? I just did a visual check...

Have a nice day Manuel

On Sat, 23 Mar 2019, 06:34 Revar Desmera, notifications@github.com wrote:

Ah. Your drive gear doesn't have the self-centering groove that the mk8 drive gear has.

https://folgertech.com/products/mk8-drive-gear-for-reprap-extruder-5mm-bore-and-7mm-effective-dia-mk-8

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.

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