Metalcasting Breakthrough

Those inventive folks at the University of Washington are at it again. This time they've been working on a simple formula for cementenous metalcasting. In other words, material with which you can make an effective mold for molten metal casts. At one point, they were using this recipe: 
 
  • 1000 parts VersaBond
  • 250 parts Maltodextrin
  • 250 parts PVA powder
 
When mixed with just the precise amount of moisture and deposited appropriately by a 3D printer, you'll get yourself a near-rock-hard mold suitable for sloshing in a hot metallic liquid of your choice. What will your first cast be? We know what Open3DP's will be (see image above). 
 
However, after subsequent experiments with other substances including - apparently - Rice Wine (all for good academic use, we're quite certain), they have arrived at the ultimate formula: 
 
There is no formula. Just go to the hardware store and purchase a 50 pound bag of USG Hydroperm for USD$30!
 
That's perhaps the simplest and best answer one could hope for. Well, done, Open3DP!
 
Via Open3DP and Open3DP

General Fabb

Kerry Stevenson, aka "General Fabb" has been writing Fabbaloo posts since he launched the venture in 2007, with an intention to promote and grow the incredible technology of 3D printing across the world. So far, it seems to be working!

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