Have been attempting to drill a no-slip fit hole in aluminum using a undersized drill followed by a reamer. Have noted that the hole is not consistently sized and looks to be bell mouthed at the end closest to the drill chuck and tight at the exit in the back. There are three distinct possibilities:1) the tailstock is misaligned; 2) the chuck is not seated in the tailstock assembly correctly; 3) the drill chuck itself lacks precision and misaligns the drill. Would appreciate any help in the identification and resolution of these errors. Will make the tailstock alignment bar in the future; however, this solution does not address items 2 and 3.
Thanks