Building a one-off prototype is usually pretty straightforward. Find some perfboard and start soldering, weld up some scrap metal, or break out the 3D printer. But if you’re going to do a production run of a product then things need to have a little more polish. In [Eric Strebel]’s case this means saving on weight and material by converting a solid molded part into something that is hollow, with the help of some lasagna.
What [Eric] walks us through in this video is how to build a weep mold. First, the solid part is cast in silicone. Using the cast, …read more http://pje.fyi/QCpGp4