9.5mm magnetic pen holder
thingiverse
A magnetic whiteboard pen holder to stick on metal things. Designed for 9.5mm marker pens.You will need to buy 6x3mm magnets from amazon. You can either super glue the magnets in or 'weld' them in with a soldering iron. I have attached the fusion 360 file and a .STEP file so you can modify it to take whatever size pen you'd like to.
Download Model from thingiverse
With this file you will be able to print 9.5mm magnetic pen holder with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 9.5mm magnetic pen holder.