The Bradley Boys are at it again. They let neither lack of skill, misunderstanding of purpose or gaps in skill-set stay them from their task.
Here we have a perfectly innocent jointer (circa 1940's). Its only crime is having seen some decent amount of use since the last knife change. The Bradley Boys descend on the poor beast. Although on casters it is not nimble enough to navigate the craftily congested garage shop and so we catch it.
Glenn takes a piece of glass and sticks it in place with some 3/4" magnets. The baggies make it easier to pick the magnets up when we're done. There are also two 1" magnets that are taped right up near the edge of the glass. They are taped as when the glass is moved out to the position we require, the magnets try to move back toward the outfeed table where there is more meat to magnetize toward (is that correct use of that term?). Before sliding the glass (and therefor the magnets) into position, the old knives are removed (no that's not rust, that's mahogany sawdust) and the knives fresh from the sharpener's are installed "pinky-tight".
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The gib and knife are positioned left to right. The glass is then slid so that the 1" magnets are over top-dead-center. Glenn uses a white pencil to make a mark as a visual queue for TDC to make things quicker when the head is rotated to the next knife. The "pinky-tight" gib screws are loosened and the knife jumps up against the glass thanks to the magnets. The gib screws are then snugged. Repeat for the other two knives.
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Check that each of the knives just brushes the underside of a reference tool held over TDC. Now go back around and tighten all the gib screrws
Adjust the infeed table for a light cut and grab a piece of irregular stock out of the bin. A test run is done till two perpendicular side are completely milled. A machinist's square finds the Bradley Boys satisfied.
We will use the nice newly sharp jointer tomorrow when we make vise jaws for a vise addition to the workbench.