Humbucker Routing Guide
thingiverse
If you want to print your own instead of buying a commercial one. It has about 1.5mm clearance around the whole pickup.
Download Model from thingiverse
With this file you will be able to print Humbucker Routing Guide 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 Humbucker Routing Guide.