What tapper tool to.use for 1/4 shafts..
A Woodchuck or similar sanding-style tool will do it. Or, I think the new Tru-Center tool has 1/4" guides available. Failing that, just shim them up with some masking tape. It'll add some time but it will work fine.
Guy
Or if you have a discsander and a protractor....
(http://i32.photobucket.com/albums/d34/kennym/SANY0080.jpg)
(http://i32.photobucket.com/albums/d34/kennym/SANY0081.jpg)