[Arm-netbook] Laptop idea

[Philip Hands]

Luke Kenneth Casson Leighton <lkcl at lkcl.net> writes:

> On Mon, Aug 11, 2014 at 11:23 AM, joem <joem at martindale-electric.co.uk> wrote:
>>
>>>  remember joe, unlike even your own business there is no income yet, i
>>> cannot just drop $10,000 to $20,000 into tooling so unless someone
>>> comes up with that money things have to be done in a bootstrap
>>> sequence.
>>
>> I fully understand, and I would donate where I can.
>> (Some infrastructure goodies coming your way soon,
>>  and when I get enough resources, some EOMAs.)
>>
>> Have you thought about 3D printer?
>
>  up until i was working here and earning good money... mmmm... no.
>
>> I bought 3 of these
>> http://cpc.farnell.com/velleman-kit/k8200/3d-printer-k8200/dp/HK01193
>> (£409 + VAT) and they can make all the difference getting the plastic
>> side going. Just add openscad and some good old rasp or a file :)
>
>  ... you know what?  what the hell, i'm gonna get one :)

You might want to look at:

  http://hydraraptor.blogspot.co.uk/2012/12/mendel90-updates.html

a few more quid, but really nicely designed by someone who knows what
he's on about, judging from things like this:

  http://hydraraptor.blogspot.co.uk/2012/04/stepstuck.html

(most of the rest of the reprap folk are busy gluing heatsinks onto the
insulated tops of the driver chips in the misguided belief that that
might fix their problems, so it's very refreshing to see someone
who can actually work out the underlying causes of problems.

Not that I know anything (good or bad) about the K8200.  A very quick
duckduckgo turned up this though:

  https://duckduckgo.com/l/?kh=-1&uddg=http%3A%2F%2Fwww.thingiverse.com%2Fthing%3A317411

which seems to suggest that it's not that accurate out of the box.  The
"rough around the edges" comment in this:

  http://www.jameco.com/Jameco/workshop/productnews/velleman-3d-printer-build-2.html

may be significant too, although I'd say that probably applies to all
reprap style printers -- they all seem to be open-loop, with end-stops
only on one end of each axis, so ... well that's another thing that
nophead has addressed:

  http://hydraraptor.blogspot.co.uk/2012/06/only-way-is-up.html

If you don't mind rough-around-the-edges, then I have a mendel in bits
in the cellar that I can flog you :-)

Cheers, Phil.
-- 
|)|  Philip Hands  [+44 (0)20 8530 9560]  HANDS.COM Ltd.
|-|  http://www.hands.com/    http://ftp.uk.debian.org/
|(|  Hugo-Klemm-Strasse 34,   21075 Hamburg,    GERMANY
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