I purchased this item a couple of weeks ago and used it to set the knifes on my Minimax combo jointer, planner. I'm not ranking this item very high because although it is usable, it is also very cheaply made. The dial in calibrations are more eye candy than functional indicators of feeler block adjustments. You will be wise to use a piece of metal the same thickness of your blade height to set the feeler block height with.
Here is how I accomplished an accurate adjustment of the two jigs.
1 - take a piece of flat metal the thickness of the height your blades from the planner head. (Refer to the specs on your planner for that dimension)
2 - place the metal on your jointer table or a flat metal surface.
3 - set your first jig on the table so that the feeler block magnet is above the metal. Make sure that your locating magnet blocks are resting flat on the table and the magnets are secure.
4 - the piece of metal should be attracted to the feeler block magnet but turn the turncap till the metal with the feeler block magnet make contact with the table (Make sure that the clamp bolt is loose before performing this step)
5 - Once the feeler block and piece of metal are tight against the table tighten the clamp bolt.
6 - Remove the jig from the table and the metal piece from the jig.
7 - Using the same piece of metal repeat these steps. Now you can setup your knifes.
Please note that the photo for this product is also incorrect. The jig is not for the jointer tables, it is for the cutter head. Make sure that when you set your knifes that they are set on the cutter head with the locating magnet blocks flat against the head. Then adjust your table after the knifes are set with the jig (if you are setting up a jointer). You perform the table adjustment using a straight edge and a dial indicator. This jig was not designed for that purpose.
I don't know how long these will last, but the parts for building your own jig are there, if the plastic body of the jig ever breaks down. If you have the money, I would invest in a better set. MLCS 9397 Jointer Planer Knife Setting Jig
I purchased this product without reviewing the jointer manual. I saw this product and purchased it because it seemed to me, after looking at the alternatives on the market, this was the best. While a did not actually use this product when it came, it did seem to me to be a well made product that certainly would set your blades correctly. It turns out that my jointer had springs under the knives and came with a simple device for pushing the blades in while it kept them at the right height making the purchased product unnecessary. - Jointers - Planer Knives - Planer - Jointer Knives'
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