Gridfinity CNCKitchen Threaded Insert Holder w/ Magnets

Small OpenSCAD script to add magnet holes to Rabbit's excellent Gridfinity holder for a set of CNCKitchen's soldering iron tips for insetting threaded brass inserts. 

Note that I haven't added the M3 screw holes, mostly because I don't like them, but also because there just isn't room in the original model.

It was a nice surprise to see how easy it was to load external STL files into OpenSCAD and manipulate it. See the attached OpenSCAD to see what I mean.