Carbitool Countersink Holder
Below you will find the STL file to 3D Print your own countersink holder. If you find it’s a tight fit just scale it up (101% is probably enough) in the slicer.
Mine was printed in PLA+ with 3 layers on top as I found fewer layers left some holes. You can further reduce holes by increasing your infill percentage.
If you have any suggestions or issues email me at joe@joesworkbench.com