Hi All,
I could benefit from some collective wisdom. I'm having issues using a step drill to enlarge pilot holes from a dimpled #40 to 9/16" for comm antennas on the bottom of my RV-14 QB fuse. The holes wants to migrate off center. Does anyone have any techniques for keeping a step drill centered when enlarging from a pilot hole? I'm using lube, controlling the speed and making sure to keep the drill square to the surface. I've had this problem in the past. I've drilled one hole so far but wary of the issue I stopped at 1/2" to inspect and its migrating off center. I can clean it up with a file to final size but there's got to be better way for subsequent holes. Any advice is very appreciated. This shouldn't be hard.
Cheers,
Scott
RV-14
I could benefit from some collective wisdom. I'm having issues using a step drill to enlarge pilot holes from a dimpled #40 to 9/16" for comm antennas on the bottom of my RV-14 QB fuse. The holes wants to migrate off center. Does anyone have any techniques for keeping a step drill centered when enlarging from a pilot hole? I'm using lube, controlling the speed and making sure to keep the drill square to the surface. I've had this problem in the past. I've drilled one hole so far but wary of the issue I stopped at 1/2" to inspect and its migrating off center. I can clean it up with a file to final size but there's got to be better way for subsequent holes. Any advice is very appreciated. This shouldn't be hard.
Cheers,
Scott
RV-14