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Subject: 
Re: Some brainstorming needed.
Newsgroups: 
lugnet.robotics
Date: 
Fri, 12 Mar 2004 15:03:11 GMT
Original-From: 
Steve Baker <sjbaker1@airmail.net&SayNoToSpam&>
Viewed: 
1139 times
  
Juergen Stuber wrote:
> lego-robotics@crynwr.com (Steve Baker) writes:
>
>>I've been thinking about trying to build a '3D printer'.
>
> how about building a robot that uses a pile of 1x1 plates as raw material?
> These are even easy to come by in the form of mosaics.

Using 1x1's wouldn't permit you to build overhangs or under-cuts.

But also, using things that big as the smallest building blocks would
result in very coarse-looking objects.  You also need a heck of a lot
of them to build a solid 3D object of any size.   To build just a 10x10x10
stud cube, you need 100 of them for each layer and about 22 layers - so you'd
need 2200 1x1 plates.  But then look at building a Lego sculpture or something.
You don't have the resolution to make a believable looking sculpture in
just 10x10x10 studs!

No - these machines have to be able to build *anything* that you could
describe with geometry in a computer.  I have seen one of these machines
building a ship in a bottle by building up both the ship and the bottle
layer by layer.

Here are some links to the machines I'm thinking about:

http://www.cadinfo.net/editorial/z402.htm
http://www.ualberta.ca/CNS/3DPRINTER/
http://news.bbc.co.uk/2/hi/technology/3126625.stm
http://www.gizmo.com.au/public/News/news.asp?articleid=2578

I understand that I'm not going to have that much resolution using Lego - but
even producing something fairly lumpy would be impressive.

--
---------------------------- Steve Baker -------------------------
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Message has 1 Reply:
  Re: Some brainstorming needed.
 
(...) I've had a 3D graphing calculator on my mind for a long time. Another of my hobbies is 3D fractals. In the case of the 3D fractals I would make, there would be no overhangs. Imagine though that you did not restrict yourself to 1x1 plates. What (...) (21 years ago, 12-Mar-04, to lugnet.robotics)

Message is in Reply To:
  Re: Some brainstorming needed.
 
Hi Steve, (...) how about building a robot that uses a pile of 1x1 plates as raw material? These are even easy to come by in the form of mosaics. Jürgen (21 years ago, 12-Mar-04, to lugnet.robotics)

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