Dave, here's the pics I promised you. there on my flickr account;
http://www.flickr.com/photos/69041177@N00/
The trick to getting a square cut is by not allowing the disk to cut too deep into the shaft which you turn by hand. Hence the screw blocking the dremel. ( it's not a real dremel, it only costs around 35 dollars plus the metal bar which was 9 dollar made it a very cheap arrow cutter )
F.