[hackpgh-discuss] Re: universal construction kit

Yup, LEGOs are pretty damn close, even for toys.
Something else I learned the hard way is how much ABS shrinks after printing. I was trying to make some 1/4" holes for pipe valve sockets and they kept coming out smaller than the inner-diameter of the threaded inserts. A little measuring later it came out that I was loosing between %1 and %3 on various parts of the model after I printed things out. 


On 3/21/12 17:16, Sarita Taub wrote:

You'd be surprised at how tight the accuracy has to be. Too loose, no
friction fit. Too tight, you run the risk of ruining you legos. :/
Sarita
-----Original Message-----
From: Zachery Shivers <zachery.shivers@xxxxxxxxx>
To: hackpgh-discuss <hackpgh-discuss@xxxxxxxxxxxxx>
Sent: Wed, Mar 21, 2012 4:27 pm
Subject: [hackpgh-discuss] Re: universal construction kit

    Plus, is your makerbot accurate to the micron? :- )


Do Lego's really require micron resolution to snap together?!



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J. Eric Townsend
design: www.allartburns.org; hacking: www.flatline.net;  HF: KG6ZVQ
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