Sphere Ice Mold
thingiverse
A Japanese-style spherical ice mold can be crafted using aluminum blocks, as demonstrated in this tutorial (http://blog.ussjoin.com/2012/01/making-the-mold.html) referencing a YouTube video (http://www.youtube.com/watch?v=cuwJEN3VG-Y). To make the mold, mill two 3"x3"x1.5" aluminum blocks to precise specifications and align them using guide rods. After finalizing the alignment, heat the mold under running water to create a flawless, seamless ice sphere.
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