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Superstrings puzzle

by richgain Nov 4, 2016
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Both pieces are equals?

No, they are slightly different in the middle.

I had a lot of trouble printing this. The pieces are so narrow and long that they break very easily. Recommend 100% fill, and probably scaling it up 150%. I also had trouble with the pieces being too big to slide into each other. So I gave up after 4 attempts.

Sorry to hear of your troubles. It's definitely not an easy print and does need a well-tuned printer. The red piece in your photo has some serious distortions, by the look of it. What speed are you printing at?
My three best tips for printing puzzles are: lower your print speed; lower your acceleration rate; decrease your extrusion multiplier. Over-extrusion is a major problem when the puzzle has very tight tolerances.

The red one was done at 100% infill due to my problems with it breaking. This might have caused it to swell a little. Generally my printer and the settings I have been using work VERY well with other prints (I rarely use 100% fill though). I have done a lot of printing. I think the distortions are probably more likely caused by the type/density of supports used. If I am going to try this again perhaps I will scale it to 150% in size, use an infill of 75%, use 5 perimeter shells and review the support settings.

I don't think I can print this. Too many supports to remove. :(

It's definitely not an easy print. Simplify3D can helps as its supports are some of the cleanest, I find.
I didn't get a really good copy printed until I converted my E3D BigBox printer to have dual extrusion capability.
I like to use PLA for the parts and PolySupport for clean break-away support material.

:l Okay. I use Cura, and the supports are great if you have the right settings, but hard to remove.

Does printing them in the same color make solving it trickier?

It may be a little more difficult to follow the instructions but otherwise, no not really.
It has many very close tolerances so the most important thing is to tune your settings to ensure that your printer is not over-extruding.

This looks like a really nice puzzle, did you design it yourself?

Thank you. Yes, I did. I was playing around with the idea of a pair of interlocked tetrahedra with points aligned with the vertices of a cube. This puzzle was the result of about nine iterations.

That looks like a Hilbert Fractal...