Ratcheted Glue Stick

I saw this video on YouTube:
http://www.youtube.com/watch?v=GcP8AWTeJ6g
Basically, the guy printed out a PLA glue stick and uses that to fuse multipart prints. Great idea! But he's forcing the stick through using his thumb; the trigger pusher isn't gripping correctly. I think this is because PLA is not flexible, like typical hot glue, and has a smooth, slick finish. So I printed out the ratcheted glue stick! Comes in 4-ish and 6-ish inch (100-ish and 150-ish mm) sticks for a 7/16 inch (11.11mm) "full-size" standard glue gun. They work like a champ.