[Metalab] [intern] Please don't use our Mendel90 Dibond 3D Printer until it is fixed. Need help

[Chris Hager]

ev http://www.3dee.at/ ?
On Dec 12, 2014 7:27 PM, "Michael Kafka" <m.kafka at aon.at> wrote:

> Hi all,
>
> it looks like there are some important parts
> missing from the hot-end assembly, especially
> a hollow-lock set screw like this one:
> http://www.mcmaster.com/#set-screws/=uzrymv
>
> This hollow-lock screw holds the PTFE lining
> inside the nozzle holder:
>
> http://reprap.org/mediawiki/images/thumb/8/8c/Jhn_nozzle_holder_v5_metric.jpg/150px-Jhn_nozzle_holder_v5_metric.jpg
>
> If this screw is missing and the PTFE lining
> is loose, the filament has not sufficient
> guidance while it is beeing fed into the melting
> chamber and the molten filament can completely
> mess up the hot end.
>
> I have no idea who played around again and
> just put the broken 3D printer back without
> saying a word, makes me sad...
>
> Please be a little more disciplined when
> working with expensive and maintenance-intensive
> machinery.
>
> I'll try to get the parts tomorrow,
>
> Where can I get a screw like mentioned above?
> (5/16-24 hollow-lock socket set screw )
>
> Where can I get PTFE (vulgo Teflon) tubes?
> (metric: 6.35 mm OD, 3.175mm ID)
>
> Greets,
>
> MiKa
>
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