Although, it will probably be some time before we can design a miniature in a program like CAD and then print it off as a three dimensional piece, the technology continues to develop.
If you have $15,000 or so, you can buy a pretty decent machine that would fit in an office. If you have $100,000, you can get something truly awesome, but you’ll need a warehouse to store it.
The rest of us will be checking out the hobbyist kits that run in the $1,000 to $2,000 range.
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