Krampelok (christmas with a slight delay)

[Werner Almesberger]

[ I posted this on the 24th, but the mailing list was down. Wolfgang
now fixed it, and since most of the content is still relevant and
I still like the figurine, I'll just repost. ]

The last few months I've been rather busy at Neo900, so I didn't
have much time to work on Anelok. I did get myself a 3D printer,
though, which inevitably resulted in this seasonal tableau:

Loading Image...

The fellow in the background [1] is one of Santa's little helpers
in Austrian folklore, with expertise in the handling of wayward
kids. [2] So there are some parallels to engineering.

[1] Krampus by hyperplanemike
Published on December 7, 2016
www.thingiverse.com/thing:1949363
CC-BY

[2] https://en.wikipedia.org/wiki/Krampus

The case shown is for the "new" design, now with mechanical buttons.
As one can see, it's not quite perfect yet (bottom lid doesn't close
properly, there's no place for the black tab on the display to go,
the buttons are a bit on the small side and don't move freely, the
rfkill switch is too difficult to reach, plus a lost of other small
issues), but it's a start.

Overall, the device is nice and small. And, as Bas has observed
already a long time ago, it has a decently solid feel.

Here is another picture, showing a device with the old CR2032-based
design next to the (work in progress) new case:

Loading Image...

- Werner

[Cristian Paul Peñaranda Rojas]

Hey Werner , merry Christmas and new year ! ;-)

I couldn't hold my self and ask , is this case printed using colored or non colored ABS may be? I remember colored materials doesn't have the same finished looking.

Cristian Paul

Post by Werner Almesberger
[ I posted this on the 24th, but the mailing list was down. Wolfgang
now fixed it, and since most of the content is still relevant and
I still like the figurine, I'll just repost. ]
The last few months I've been rather busy at Neo900, so I didn't
have much time to work on Anelok. I did get myself a 3D printer,
http://downloads.qi-hardware.com/people/werner/anelok/tmp/krampelok.jpg
The fellow in the background [1] is one of Santa's little helpers
in Austrian folklore, with expertise in the handling of wayward
kids. [2] So there are some parallels to engineering.
[1] Krampus by hyperplanemike
Published on December 7, 2016
www.thingiverse.com/thing:1949363
CC-BY
[2] https://en.wikipedia.org/wiki/Krampus
The case shown is for the "new" design, now with mechanical buttons.
As one can see, it's not quite perfect yet (bottom lid doesn't close
properly, there's no place for the black tab on the display to go,
the buttons are a bit on the small side and don't move freely, the
rfkill switch is too difficult to reach, plus a lost of other small
issues), but it's a start.
Overall, the device is nice and small. And, as Bas has observed
already a long time ago, it has a decently solid feel.
Here is another picture, showing a device with the old CR2032-based
http://downloads.qi-hardware.com/people/werner/anelok/tmp/case-comparison.jpg
- Werner
_______________________________________________
Qi Hardware Discussion List
Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion

[Werner Almesberger]

Post by Cristian Paul Peñaranda Rojas
is this case printed using colored or non colored ABS may be?

The one in the picture is printed with white PLA. I also briefly
tried white ABS, which produces very similar results, but feels a
little nicer to the touch.

ABS should also be easier to smoothen (chemically, with acetone or
similar), so that's what I plan to use in the long run. PLA is nice
for test prints since it's a easier to print. Unfortunately, there
doesn't seem to be any non-suicidal process for chemically
smoothening PLA.

Post by Cristian Paul Peñaranda Rojas
I remember colored materials doesn't have the same finished looking.

There seems to be an entire branch of science waiting to be properly
researched ;-) Printing temperature is said to affect the finish,
and the pigment affects the temperature profile of the plasic.

I use white for test prints to make it easier to spot flaws. After
that, I'll switch to black.


The main problem for now is elsewhere, though: it's the round
overhangs. As one can see in the picture, they're giving my printer
a hard time. Adding support structures just shifts the problem from
an unevenly printed surface to one that's uneven because of support
residues.

I'm trying to make things a bit easier for the printer by reducing
the radius of the curvature at the base. The should reduce the number
of layers where the overhangs have an inclination too flat for smooth
printing.

- Werner

_______________________________________________
Qi Hardware Discussion List
Mail to list (members only): ***@lists.en.qi-hardware.com
Subscribe or Unsubscribe: http://lists.en