Cordless glue guns create quick adhesive bonds between surfaces such as paper, wood, plastic, metal, fabric, and styrofoam, making them convenient tools for arts and crafts, DIY projects ...

After some initial tests and a discussion with colleagues, it was clear that trying to make this happen was worth possibly wrecking a cheap glue gun. According to the RepRap Wiki entry for PLA ...

but when you consider that there are other interesting materials which are only available in stick form it’s clear that this goes beyond the glue. If you’re up for more hot glue gun oddities ...