H2D Toolbox - full printhead insert

This is an insert for the H2D toolbox by Maxx Design that will hold 8 print heads with their silicon sock. The A1/H2D print heads have a neodymium bar magnet in the back of them, so I added a slot to press fit a 2x6mm magnet. The magnet makes the print heads a little more secure. I use this magnet orientation jig.