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I'm creating a LEGO Mindstorms catalogue for a school project. I measured the LEGO parts and I made an average size. My goal is to create new parts with a Rapid prototyping machine and I wanted to make sure that I used the good dimension.

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possible duplicate of Exact dimensions of studless Technic beams –  jncraton May 2 '13 at 16:43
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up vote 2 down vote accepted

I don't know where you got that image, but you could always try and print the brick using the dimensions shown.

Using the brick (#32316) shown in your example it might be possible to produce a 3D model using the 32316.dat file that's available in the LDraw library. The next problem would be placing the brick in a model and exporting it as a file type that is actually compatible with CAD software.

I'm not sure how accurate the bricks in the LDraw library are as they're primarily for illustration purposes as digital models.

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There's some notes on using the LDraw parts for 3D Printing on Is it possible to build LEGO bricks with a makerbot 3D replicator print –  Zhaph - Ben Duguid May 3 '13 at 10:09
    
Thx Ambo100, i made this image usign CATIA. i didn't wanted to spend too much money on trying different configuration. :) –  Brookline May 3 '13 at 12:22
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