Cool 3d pen: http://www.geek.com/articles/gadgets/75-3d-printing-pen-20130219/
Man, I would have had fun with that in High School! Anyone ordered one of these?
simple ideas allways wins.
I can only imagine when this goes really common tech $15 per pen and chinese plastic extra large color bars at $1.
Diferente stroke sizes, a must.
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