Contrasting micro and macro molding methods

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March/April 2014 Volume 7 Issue 2
By Sherry Baranek

Size matters when molding microparts. The molding machine and toolmaking practices used matter, too. When micromolding, it’s best to use equipment and techniques intended for the job.

The reason has to do with part weight, according to Scott Herbert, president of Rapidwerks Inc., a Pleasanton, Calif., micromolder. Parts weighing 0.1g to 1.5g can be produced with conventional molding machines and standard toolmaking methods. But he said a part that weighs ≤0.001g requires a dedicated micromolding machine, specialized tooling and custom handling for part extraction and part packaging.

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