CNC End mill Teaching Aids

My girlfriend and I teach a CAD/CAM class at the local hackerspace/makerspace and she had the brilliant idea to 3D print some endmills to use as teaching aids instead of passing around an actual end mill where there is a worry that people would cut themselves on the sharp flutes or would accidentally drop it and shatter the tool. 

Using some STEP files from McMaster-Carr I scaled up/resized the end mills to be large enough to be held up in front of the classroom and still be visible, as well as some smaller but still larger versions to be passed around to the class.

After printing the endmills I realized it would be nice to have a way to easily carry them from the classroom to storage in the hackerspace, and it would be nice to have a way to keep them all together so they would not get lost, so I created a holder specific to these end mills.

Printing

The holder holds up to 10 end mills, 8 end mills (two flute/four flute versions and ball end/square end mill), as well as two tapered end mills, both ball and square variety again. To complete the whole set, print the two flute/four flute ball end/square end mills twice for a total of 10 smaller end mills.

The large end mill that sits in the middle of the holder is sized appropriately for either the H2 series of printers or the X1/P1 series of printers. The holder is also appropriately sized for either the H2 series (100mm diameter) or X1/P1 series (80mm diameter).

• Plate: Endmills
  • 0% infill
  • 4 walls
• Plate: Holder
  • 15% infill cubic support
  • 2 walls
  • Support yes

Filament choice: I've printed these out of PETG, but any filament will work here, including PLA. Print it in pretty colors if you'd like!