Sentry robot from Portal

by phototr0pe, published

Sentry robot from Portal by phototr0pe Feb 9, 2011

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I made this as a gift for a friend who was really into Portal. I spent some time over winter holiday putting together the CAD by eye from various images, and when I came back to school I took advantage of the fact that our student machine shop has a 3D printer available for student use to make a few.

SLDPRT file is from Solidworks 2010.

Sentry robot belongs to Valve, I am just borrowing its image for a cool project.


If you have access to a 3D printer and you want to print this you probably don't need my help. The figure is about 3.5" tall, and to save material I laid it down on its side. However this means that the front legs are extremely weak and brittle. I'd recommend either beefing up the slender leg supports or printing it in a different orientation (if one can be found) to make it work better.

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Sentry robot from Portal by phototr0pe is licensed under the All Rights Reserved license.

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Why not detach the legs into their own STL and print them separately?

Have appropriate holes in the body to stick them in.

(Or glue with a drop of acetone or glue.)

really well done, this looks great!

Whoah, I just learned a mountain of new solid works techniques. Nice modeling!

I'm adding the STL file for those of you who aren't as lucky as I am in having gotten Solidworks for free from school. :)

I see you.. Would you come over here?

Nice one... Only one thing.. How can i open the file?
Only have a stl viewer and sketchup on my pc atm.


Target lost..

Are you still there?

You must take a picture of one sitting on a cake!!!

The cake is a lie!