If you need to make 200 of a napkin ring for a party that takes one hour each to 3D Print, should you 3D Print them all, or just one and then make a silicone mold to cast the rest? This is another great question submitted by Eduardo Martini of Brazil. In this WTFFF?! episode Tom & Tracy go over the details and weigh the options between speed, skills required, material quality, design limitations, and labor.

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