Naturally, this jointer needs a lot of work before it can be used. One of the sides is at a perfect 90° to the sole, however, the other one is at about 87° to the sole (meaning that the sides are not parallel). If I'll ever have to use it on shooting board, I'll use the good side. However, the big problem is that the sole is nowhere near flat. The shape is concave along the length, and somewhat across too.  Even though the marker pattern indicates that the ends and the sides of the sole have been flattened, placing the jointer against flat granite revealed that the ends are still way too high. I have no idea why the sandpaper didn't fix the ends - maybe it isn't pressed against granite well enough, springs up, and follows the concave shape of the sole?. Download PDF. This article is from Issue 95 of Woodcraft Magazine. Flattening a plane sole typically involves rubbing it on an abrasive that’s sitting atop a dead-flat surface like a cast iron table saw wing or slab of reference granite. For abrasive, I’ve used wet/dry carborundum paper, but it seems to lose its aggressiveness pretty quickly. Alternatively, I’ve used silicon carbide powder, but that can undesirably abrade my reference surface. I finally realized that combining the two is a better approach. I start off with carborundum paper attached with spray adhesive. Then, as the paper dull. Both planes appear to be convex on the bottom – the middle looks proud of both ends. My first thought was that my straight edge might not be straight – both planes seemed to have the same problem. When I checked it against a machinists straightedge at work, the two edges agreed (I figured they did not have complimentary distortions.)  Flattening a convex sole is the most difficult as the plane tends to rock on the sole as you move it. I have been successful in flattening a convex sole by using 80 grit stuck to a block with spray on adhesive, and working on localised areas with the plane held upside down Ie sole uppermost and checking frequently with a straight edge.
Apr 28,  · I purchased a Faithfull number 7 jointer plane, and I expected that I would need to flatten it. So, I went to the box store and bought a 3/8 inch thick piece of glass that is about 24"x12". It is normally used as a glass shelf. I have glued 80 gri. Naturally, this jointer needs a lot of work before it can be used. One of the sides is at a perfect 90° to the sole, however, the other one is at about 87° to the sole (meaning that the sides are not parallel). If I'll ever have to use it on shooting board, I'll use the good side. However, the big problem is that the sole is nowhere near flat. May 09,  · Flattening a plane sole typically involves rubbing it on an abrasive that’s sitting atop a dead-flat surface like a cast iron table saw wing or slab of reference granite. For abrasive, I’ve used wet/dry carborundum paper, but it seems to lose its aggressiveness pretty quickly. Alternatively, I’ve used silicon carbide powder, but that can.

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