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Hot Melt Injection Mold For Maker Faire Robot

Edit: ABIS Mold Technology Co.,Ltd Date: May 05, 2017

This is a test of a mold for hot melt glue injection molding. I'm not sure if it is good for anything, but I wanted to see if it is possible to injection mold hot melt glue in a PLA printed mold. (It is!) I started off with the iconic Maker Faire robot (the manos arriba version) and created a 2-part mold. I added an inlet port and outlet ports at the extremities.To keep from melting the input port with the hot melt glue gun nozzle, I also designed a small sacrificial input duct that does get a little melted, but it is easily replaced. I was worried that the hot melt glue would simply melt the mold, but even though I was using high-temp hot glue (the gun gets to about 220C) the mold survived fine.

The only use I can think of for this technique would be for over-molding/potting of electronic components or small circuit boards.


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