I just put the retaining ring on it and jammed it in. That may be the
problem. How to tighten it up though?

I think normally there's no retaining ring planned for it, but many others
already pointed out that they put something like this in. You could take
the blue ring from the second print head construction.

Sorry for being imprecise. Hope you can fix your extruder issues. Do things
get better when increasing temperature? In the worst case you have a
blockage near the PEEK.

Cheers,
Flo

On Sat, Nov 26, 2011 at 21:50, derrickoswald <derrick.osw...@gmail.com>wrote:

the 1.1mm "give" at the bowden extension has no consequence, as long as it
doesn't slip out, you are OK. the grey plastic thing is a push fitting, and
they are for single use. once the bowden is in, it'll never come out again
(which makes repairs for the "short bowden syndrome" due to repetitive
bowden popping and readjustment in the head almost impossible, unless you
buy another push fitting from mcmaster or other sources). the push fitting
will also not impede the filament movement, so nothing really to worry
about...
I would suggest you test the filament movement by hand (turning the
extruder wheel or pushing the filament by hand), not by driving the
extruder stepper by software... nothing beats tactile feedback.

Hm... can't confirm that one. You always can push down the ring and release
the tube. But as these sharp teeth of the plug bite into the tube it wears
off. So you should try to keep the number of ins and outs as low as
possible.

Also would recommend to test the flow by turning the big wooden cog wheel.

Cheers,
Flo

Anyways, if somebody needs replacement bowden tube in NYC, I have a couple
of meters.

This weekend the Economist carries an article about 3D printing.
www.economist.com/blogs/babbage/2011/11/3d-printing

A quote:

"Bre Pettis, one of the founders of MakerBot Industries, which runs Thingiverse on the side, believes personal manufacturing is currently going through much the same phase as personal computing did in the 1970s. In many ways, that makes MakerBot the MITS of today. It has sold over 5,000 of its Thing-O-Matic 3D printers, which retail for $2,500 fully assembled or $1,299 in kit-form. Meanwhile, a newcomer from the Netherlands called Ultimaker, which costs $1,700 as a kit, is winning fans for its raw speed and ability to handle larger jobs. Some wonder whether the Ultimaker could be personal manufacturing's Apple II."

Cheers !
Bart Bakker

Could anybody in NL quickly print a picture frame, frame this, and hang it
above Erik & Co's bed? ;)

Nice one. Really happy to see the Economist doing proper research on their
stories.

Flo

Hi

This thing http://www.thingiverse.com/thing:10799 by mechadense<http://www.thingiverse.com/mechadense>was made to fix that.

Owen

I believe those things (thing10799 <http://www.thingiverse.com/thing:10799> and
thing12125 <http://www.thingiverse.com/thing:12125>) are trying to fix
another problem - which is that the nut securing the Bowden cable comes
loose.
That isn't my problem.
But I did find some instructions on the Norgren site on how the Bowden
cable is supposed to be attached to the fitting<http://derrickoswald.blogspot.com/2011/11/extruder-experimentation.html>
.
This, however, didn't solve the extrusion stopping problem.