Originally Posted by
shanbaum
It's clearly a 108 or 108B (the difference being, the latter had a motorized sweep and feed).
It's a "takeoff" generator, which means that rather than setting the thickness at the front curve, you have two other settings to be concerned about: the blank thickness, and the finished thickness (which should include an allowance for fining).
There's no link between the two sides of the machine; that's why you have to position the tailstock manually, in effect setting the cutter at the back of the blank.
It's been about 25 years since I've used one of these, so I hestitate to recount the exact steps, as I'd probably get something wrong. But the general principle is, you start with the dial at the blank thickness, and dial downwards with each sweep, stopping at the desired finished thickness.
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