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I have a 1952 Powermatic 24" planer. I need to know how the blade height is determined after the blades have been sharpened. Is there a jig available or a measuring technique that needs to be employed?

Setting the blades is more hazardous than difficult, since the blades can slice your fingers while handling them. And that's where a jig comes into play. You must set all blades the same height – roughly 1/8" . The actual height is not as important as getting them all the same – some planers are 1/8", a few are e 3/16". You could fabricate a jig yourself. The purpose of the jig is to set the blade height at 1/8" and hold the blade in place (without cutting your fingers off) until you can tighten the set screws down. The best option however is to buy a jig. They are magnetic blocks that set the blade height and hold the blade in position. They are about 2.5" by 6" in size. For a 24" planer you need three (3).

They run about $69.00 each and you can get them online. The nomenclature is Woodstock International G1755 Planer Pal® - Standard Each


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