Trilego

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Published on November 12, 2011
This thing was Featured on December 16, 2011

Description

I always wished they would make this one.

Update: I cleaned up the merged area of the trilego so that a 2x2 block can attach to the bottom. Also added flat (1/3) block STL files.

makerhome.ca/

Instructions

In your scad file, "use " and then create a lego with the 'lego' module. See block.scad and trilego.scad for examples.
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I'm also finding that skienforge is messing up the interpretation of the inside walls of the trilego 2x4, making the borders of the interior single surface objects and not filling between them, almost like the bottom edge isn't there.

Anybody get this to work on SF/Replicator? I have a LEGO themed birthday party for a nephew coming up that would totally be rocked by this.

I've found that reducing the extrusion width works--i.e. by making thinner threads of plastic, the slicing operation is better at handling the case when an area is narrower than the extrusion width.

I'm not sure how to do this in SF, but in Slic3r you can change it in the "Advanced" tab, under "Extrusion width".

I'm finding that parametric / OpenSCAD based parts cause my printer fits. Notably, the walls seem to be effectively infinitely thin and, thus, Skeinforge doesn't fill 'em or something and the end result is a fragile part. Guess I need to upgrade SF!

I used your model to make a video of my new Prusa. Thanks! Hope you enjoy.

http://www.youtube.com/watch?v...

(Note: I deleted the old post and posted this under my new username)

I used this trilego to proof my machine and show to my friends what 3D printing can do and well, Everybody loves it! I'm going to have to print a few of these for my friends kids. When I showed one of the kids the lego he stood there saying he could not believe he was holding it in his hand. Thanks!

I was able to print these out just fine and real LEGO fits into the bottoms just fine but the pins on the top are loose when connecting to real LEGO bricks. Do you think it is a setting on my machine or something with the STL?

I've been playing with various settings on skeinforge to get it just right. I'm not sure either way. It's difficult to measure hundredths of a millimeter to see if the model is right or not :)

You can definitely download the scad file and tweak the knob diameter and see if that works for you.

Mine fit pretty well, a bit tight actually. You could try making the extrusion a bit heavier (increase width or maybe just slightly understate your filament diameter in SF) or you could grab the SCAD and tweak the pin size.

Yes! Finally!

I printed one of these at a convention where I was showing off my RepRap, and it got more attention than anything else I printed. One person even said "That's the best argument I've seen yet for owning a 3D printer!"

I printed it out of white PLA and it fit with standard legos perfectly on the first try.

Wow, what an awesome story! Thanks for sharing. I hope he (or she) goes out and makes a 3D printer after the show :)

Can you also make 5x2-pip arm version?

And 3x2-pip arm version?

Enjoy! The OpenSCAD files I used have also been added to the project if you need even more customized parts.