Best way to keep glue off your parallel clamps! 

They are from bench dogs uk. Magnetic stainless steel bench dog plugs. Work great to keep dust and stuff from going through or getting caught in the holes. Pop out easy with a magnet.

I’m still working on functional revisions so it works better and won’t damage the board you are gluing.

Never thought of that. I have a printer and lots of “schmecks” of filament left over. This is a good way to use them up…