Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.
Periodic Table Poster   My periodic table poster is now available!Periodic Table PosterPeriodic Table PosterPeriodic Table Poster
3D3DZinc medallion.
For a Popular Science column I wrote about making glass I needed a graphite mold to press the glass into. I machined one out of a block of graphite, and tested it by casting this medallion out of cheap and easy to melt zinc. Satisfied with the shape I went on to make similar medallions out of glass (listed under silicon because glass is mostly silica).
Source: Theodore Gray
Contributor: Theodore Gray
Acquired: 26 October, 2008
Text Updated: 29 January, 2009
Price: $1
Size: 2.5"
Purity: 99.9%