by tbuser, published
After trying and failing to do it in openscad, I worked around it's limitations by writing a ruby script that generates openscad code. This ruby script can create a 1-3 iterations of a hilbert curve in 3d. I borrowed code from a Processing script by Thomas Diewald at openprocessing.org/visuals/?visualID=15599
Unfortunately after doing this, I realized it wasn't really a hilbert cube as the shape is not one continuous curve. :( Still it looks cool and is pretty much impossible to print without dissolvable support. It would be awesome if someone smarter than me would make a proper parametric hilbert cube generator, plz!
I also found a really nice and proper curved hilbert cube by Carlo H. SÃÂ©quin at cs.berkeley.edu/~sequin/X/Hilbert_Cube/ I resized it and made a support model for it. I don't know what the license is on it, hopefully he won't mind me reposting it here. The problem with this model is that it is curved in a way that makes it a more difficult print.
See also this hilbert cube print from shapeways: youtube.com/watch?v=9cdWpQ2D-O8
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these hilbert cubes are printing beautifully on my stratasys dimension 1200es sst. I have printed all of the cubes. one run at 1.0 scale and one run at 2.0 scale. The printer uses ABSPlus (a proprietary abs melts at 300C) and a soluble support material from a second extruder also at 300C (notice same temp). parts are then snapped off printbed and placed in an ultrasonic NaOH bath for about 2.5 hours. rinse. finish.
end product is great. hilbert cube 2 is very flexible and will pop right back into shape! 4d printing! lol. Just playin. But seriously.
I loaded PVA in one side and PLA in the other. But, no joy so far. The PLA will not stick to the PVA support. So far. Maybe I need a higher temp?
Can't believe it's been 2 years...
Have you tried any other materials for dualstrusion? I did some research on rubber-like materials (for things like one piece printed hinges or water tight gaskets.) have you looked into thermoplastic-elastomers? I've only seen it sold in pellets. I figured if anyone in the 3d printer community would know it would be the renown Mr. Buser.
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