The MGA With An Attitude
Page 2 of 9 The primary tool for this job is a 3/4 inch chucking reamer with a 5/8 inch diameter shank and straight cutting flutes. This tool costs about $34 (updated Oct 2000) and is available from industrial machine tool suppliers. It should be nominal size, 0.7500 +/- 0.0002 inch diameter. The steel bearing tubes that fit inside the bushings are a bit undersize to provide the necessary running clearance.
To use this tool as a hand reamer without a drill press or milling machine it needs to be self-aligning. To make the reamer self-aligning you need to install a thin metal sleeve a bit less than 1/16 inch thick on the shank of the reamer to act as a pilot diameter. The exact thickness of the sleeve is not particularly critical. I used a piece of soft steel pipe hanging strap and just wrapped it around the shank tightly so that it will fit inside of the new bronze bushing before reaming. |
