Re: [ox-en] more on RepRap
- From: Stefan Merten <smerten oekonux.de>
- Date: Fri, 07 Oct 2005 08:50:55 +0200
Hi Karel!
Last week (9 days ago) Karel Kulhavy wrote:
specializes them to produce a certain good is software alone. This
shifts the main effort for producing a good away from constructing and
building a special machine to have the necessary software available.
Doesn't. Tell me what commands should I send to the device to produce me
3kW wind power plant or wood gassifier or Tesla gas turbine with
asynchronous generator or high-quality bike alternator with ball
bearings? Those are the things I would be interested to have.
Seemingly you are confusing presence and (possible) future
developments. Oekonux is a project analyzing reality and based on this
analysis think about what this could mean in future. So there is no
point in constantly asking "Where is this in reality?".
Hmm I would be delighted if someone funded me so I could work fulltime
on free technology and add a project of universal CNC machine to list of
Twibright Labs projects:
Well, I think I saw something like that some years ago so you don't
Can you give URL?
There were none printed on the machine as far as I remember. But I
guess it will be easy to find because it is produced by one of the big
companies building such machines. As far as I can see such machines
are standard in the metal business today.
I think if we think of universal machinery which shifts the important
part of production to developing the right software for it and thus
I don't see how RepRap shifts production of anything interesting to me
to programming software.
Well, I didn't mean programs by software but the digital information
necessary to control the machine creating the thing. But I agree that
on the low level of productivity you are producing this is probably
not needed.
leverages processes similar to Free Software we need to think of a
range of machines which is universal for a certain area of material
operations. I think this follows from the fact that matter is far more
diverse than digital data and unless we invent Star Trek like
machinery which builds things up from atoms we need to envision a
machine park more than a single machine. Well, there are even
developments for atom movers out there, however ;-) .
You can replace plastic with metal, but not metal with plastic. Can
you build a car engine from plastic? A bike from plastic? A train from
plastic with plastic rails, plastic exchanges, plastic wheels and
plastic wires carrying 1000 amperes at 15kV?
That's totally absurd.
Well, you probably have no idea of what plastic may mean. As far as I
can see the material features of different sorts of plastic differ
*very* much so I don't think this is absurd.
to heat up to 950 or 1300 degC.
[...]
Czech Republic recuperation hydroplant Dlouhe Strane uses Francis
turbines with 1m shaft diameter and 4.5m wheel diameter. The wheel is
said to have excentricity max. 50 micrometers when spinning at 430
revolutions per minutes and generating hundreds of megawatts of power.
You seem to be easily impressed by big numbers and huge machines. To
me this looks like the mind set at the beginning of the industrial
revolution when people where impressed by steam engines. Today I think
humankind learnt how to build such things and the more interesting
thing is how they are controlled in a sophisticated way.
Mit Freien Grüßen
Stefan
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