[EMS Discuss] Ongoing 3D printer trials and tribulations.

Tom Conlin tomc at cs.uoregon.edu
Wed Jun 18 13:56:47 PDT 2014

mind the wrap


the gist of it is to use an ipad/tablet replacement screen's
"gorilla(tm)" glass as a print bed after splitting off
the brittle capacitive touch layer.

On 06/17/2014 05:18 PM, Mr. Clif wrote:
> Hi Gang,
> Well I'm getting pretty good at cleaning the printrbot head. I'm not
> sure if it's the "resonably priced" filament I bought or if having the
> temp sensor wiggle loose from the head caused the last clog. However, I
> have learned that filament mosture content is very important, and
> something we haven't been tracking at EMS. One morning I spun the
> extruder by hand and watched the filament come out as a string of little
> foggy bubbles. Kind of like a tangled mass of tiny fish eggs. ;-)
> Another issue is the filament wants to sometimes pop out of the Hobbs
> teeth and then stop feeding. So it's important the filament feeds from
> the right or left of the printer eg aligned with the X axis. Perhaps we
> could print a small guide for it to pass through. One person used a bit
> of compressed cotton to clean off any dust on the filament. Lastly
> apparently the default max speeds and accelerations were limiting our
> ability to test different settings. For example we were typically using
> 200 mm/s for moves and 70 mm/s for some fill operations. These speeds
> were never realized, and so we didn't have a clue as to what we were
> testing.
> Eventually though if you are there to catch and the non-feeds and pop
> the filament back into the hobbs, you can get a usable part, and I did
> get one, though I still need to sand it some and glue a couple of
> de-laminations back down.
>      Ciao!
>      Clif
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        ... nice weather  eh?    tomc at cs.uoregon.edu

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