learning the ropes

things I made at ITP and after: sketches, prototypes, and other documentation

Monday, May 4, 2009

Structural Changes


On Monday evening, Wendy Richmond visited to see what I’ve been working on.  One thing she questioned, both in watching me, and in using the mechanism herself, was whether I was bothered by the way the ropes constrained me to a section of the board.  I hadn’t been terribly bothered by it, but at the same time, was already been working out a way to get past it with the infrared-detection scheme.  The question still remains – what place do ropes have in this work?  If they do belong in this work, is the tension of the constraint also part of the work or something I need to remove?

Later in the week, though, I sketched one possible solution to the roop loop constraint.

Break the Loop-1

By replacing the rope loops with a simple system of counterweights, I would be able to move the drawing tool freely across the entire drawing surface.

On Saturday, I put together a prototype, by cutting the rope loops and adding water-filled soda bottles as counterweights.


At first, the system had too much friction, but after adjusting the pulley locations and changing the amount of weight in the soda bottles, I found a good balance.

posted by Michael at 3:29 pm  

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