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.