Printing complex shapes: A sugar chain

Sugar Chain We made this chain of twelve giant links on the CandyFab 4000 to demonstrate the fabrication of a complex object, the sort that is difficult to make by conventional machining processes. You can see the 3D model and some build pictures for this monstrosity over at CandyFab.org.

This object also highlights the relatively large build envelope of the CandyFab-- significantly larger than that of most other low end (i.e., under $50k) 3D fabrication systems.

PS for Chemistry geeks: insert joke about long-chain hydrocarbons here.

7 comments

The following comments are owned by whomever posted them. This site is not responsible for what they say.
Authored by: Wikkit on Tuesday, July 31 2007 @ 12:08 AM PDT Printing complex shapes: A sugar chain
Wow, fabbed objects are stronger than I would have expected. What material would you compare it to in strength?
Authored by: Windell on Tuesday, July 31 2007 @ 12:30 AM PDT Printing complex shapes: A sugar chain
It's pure fused sugar, which you've probably encountered in a few forms. In the best areas it's almost exactly like rock candy. However, the melting is not perfectly consistent and there are tiny bubbles and areas of nonuniform fusion between the layers, so the density is probably ~10% lower than that of bulk fused sugar. Overall, the strength is probably somewhere between that of rock candy and that of a (thick) candy cane... you can certainly break it if you try.

---
Windell H. Oskay
drwho(at)evilmadscientist.com
http://www.evilmadscientist.com/

Authored by: Daniel on Tuesday, July 31 2007 @ 01:31 PM PDT Printing complex shapes: A sugar chain
amazing. that is very impressive. where are you wanting to go with this machine? what are you plans?
Authored by: Windell on Tuesday, July 31 2007 @ 01:59 PM PDT Printing complex shapes: A sugar chain
We're trying to work towards an open-source design of the machine, so that everyone can build one. At the same time, we're trying to push for higher resolution, precision, speed, and volume, as well as a larger variety of materials that can be printed.

---
Windell H. Oskay
drwho(at)evilmadscientist.com
http://www.evilmadscientist.com/
Authored by: Matt on Tuesday, July 31 2007 @ 03:06 PM PDT Printing complex shapes: A sugar chain
12 units... yep, it's a polysaccharide :)
Authored by: RichM on Tuesday, July 31 2007 @ 08:05 PM PDT Printing complex shapes: A sugar chain
I'm hoping you folks can score a 3-d model of a human pancreas sometime.
Authored by: Dennis on Wednesday, August 01 2007 @ 04:58 PM PDT Printing complex shapes: A sugar chain
One could always make a model of a toothbrush and toothpaste tube for a gift for a favorite dentist.
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