26-04-2019, 08:55 PM
A couple of points:
The kingpin is slightly under .5" and a tight fit in axle. So a fixed .5" reamer is not suitable (and when new are usually slightly oversize)
As with all cutting tools, saws, drills, files, lathe tools the reamer must be kept cutting. Any rubbibng action burnishes the cutting edge. One reason for not reversing.
(For those interested, the cut occurs in the form of a crack ahead of the tool, so when cutting wear is not great
Old kpins can be converted to D bits although too small. With any process using abrasive care necesary not to force it into the surface.)
The kingpin is slightly under .5" and a tight fit in axle. So a fixed .5" reamer is not suitable (and when new are usually slightly oversize)
As with all cutting tools, saws, drills, files, lathe tools the reamer must be kept cutting. Any rubbibng action burnishes the cutting edge. One reason for not reversing.
(For those interested, the cut occurs in the form of a crack ahead of the tool, so when cutting wear is not great
Old kpins can be converted to D bits although too small. With any process using abrasive care necesary not to force it into the surface.)