Pencil Magnet

I use these in my woodshop to stick pencils on my machinery so i always have one handy. It is designed for a 6 X 3 MM neodymium magnet. I originally designed it for an interference fit to hold the magnet but found that it would deform slightly when slid onto a pencil. I keep the magnet in with a tiny drop of Duco cement but CA glue would work just as well. I usually print 8 or 9 at a time.