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Message from discussion MK7 Extruder Mods
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Andrew Plumb  
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 More options Apr 22 2012, 9:36 pm
From: Andrew Plumb <and...@plumb.org>
Date: Sun, 22 Apr 2012 21:36:19 -0400
Local: Sun, Apr 22 2012 9:36 pm
Subject: Re: [MakerBot] MK7 Extruder Mods
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I swapped in a small split-washer for one of the delrin washers and that has been working quite nicely.  No idea what size it is other than "small and fits" from my rather large accumulation of bits over the years.

On 2012-04-22, at 9:32 PM, alex e wrote:

> It looks like a bunch of us are seeing more slack in the plunger as
> time goes on, and the parts wear.  I did the same as another poster
> (Luis?) and put a little bit of a bend in one the metal washers last
> time I took it apart, which is working, at least for now.

> Has anyone had any success with swapping in a small spring into the
> MK7 extruder?  I've seen the external spring loaded mods, but was
> thinking removing  some of the washers and replacing with a small
> spring might work better.

> Seems the spring would address the wear issue as well as help with
> filament (although I agree with others that this would just mask
> issues with bad filament).

> Size/tension seems to be the biggest question...

> Any thoughts?

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