08-02-2015, 12:44 PM
OK, not a total mystery, but I'm still perplexed. I went to a very cool estate auction yesterday. LOTS of woodworking stuff from big machines to all the little bits and pieces we all accumulate. I bought nothing major of gloat worthy proportions, but I did score a couple of "what'll you give me for everything left on the table" kind of deals. Among one of those 'clean up' deals, were these planer knife setting jigs. They appear to be well made quality jigs. I'm just not sure how to use them. They are aluminum with magnets mounted on the two bottoms. The probes are adjustable and one of the jigs has a dial indicator. I'm a little confused because unlike many jigs the magnets don't appear to be set so they would necessarily mate with a round cutter head- although I suppose they would saddle over a round head. Also do the probes just serve as a touch point on the knives and if so, what it the purpose of the dial indicator. Maybe it is a proprietary jig made for a specific model planer? No manufacturer markings anywhere on the jigs. As I said, it looks like a quality jig to me, but only if I knew how to use it.
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