There are limits to what you can legally do with a gun you've created from a kit that doesn't include a registered receiver. You can't sell it, for example. So it's illegal to go into the manufacture ...

Anyone who has considered purchasing a 3D printing pen that has a spare glue gun and some Lego may be interested in a new DIY 3D printing pen that has been created by Vimal Patel. The awesome 3D ...

Given some biodegradable 3D printing filament and tasked with doing something creative with it, Vimal Patel built an extruder using Lego, attached it to a rather ordinary hot glue gun and ended up ...