Vine here: https://vine.co/v/O5bIvBMMUD7 My buddy has a Grindripper wholebean pour over travel kit. Like this: http://espressounplugged.com/grindripper Only problem is, sometimes I want coffee now! We have one of those mini Milwaukee drills with the quick-release, so I made an adapter to make the Grindripper just a tad more awesome. I made the pentagonal hole for the grinder 7.3mm from apex to midpoint of the opposite side (the line that would divide the shape in half). The drill-bit side is 6.3mm diameter.