View Full Version : IKBS drill bit.

05-03-2010, 10:15 PM
i'm currently in the process of making a balisong, so i ordered the specialty IKBS drill bit from tracy. it's a 3/8" counterbore with a 3/16" pilot. i'm using 3/16" pivots, and when i made the race, it was double the size i needed. did i get the wrong size counterbore? if so, i'm in trouble. or did i do it right? i'm horribly confused, so any help here is appreciated.

05-04-2010, 12:09 AM
I thought it would be 5/16" ... 3/16 for the pivot plus 1/16 x 2 for around the pivot.

Brad Anderson
05-04-2010, 12:21 AM
Cubane is correct. the O.D. of the counterbore should be 5/16" when used with 1/16" loose ball bearings. Give Tracy a call and ask him if he has a bearing for that bore. I seem to remember him selling a one piece bearing assembly that took a larger counterbore.

05-09-2010, 08:43 PM