This morning I placed one of the side plates in the vise with a big 2-4-6 block behind it, then I clamped the plate the the block to keep it straight. With an edge-finder, I put the spindle on location over the long post. Then i drilled & tapped a 3/8-16 thread through the post, and gave it a nice countersink on the threads. Now I need to countersink the opposite side, so I use an extension tool holder with a 3/8 collet, to reach down to the post. With an edge-finder, I put the spindle on location and finished up with the countersink. This hole is for the long bolt which will adjust the spring tension on the pinion gear.
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