A hand tool is not finished when it is bought. A new plane arrives with a sole that is nearly flat and an iron sharpened to about the standard of a butter knife; an old one arrives with sixty years of somebody else's habits ground into it. Both need the same evening of work before they earn their place, and that work is what this section is mostly about. The entry on setting up a new block plane and the one on judging an old one at a stall describe the two ends of the same job.
The other half of the section is repair rather than setting up. Handles break, heads loosen, sockets rust and totes crack, and almost all of it is fixable at a bench with a vice and a spokeshave, for the price of a blank and an hour. Where a tool needs an edge before any of that is possible, the method sits in the sharpening section rather than being repeated here. Sizes are given in millimetres, with the imperial figure where a tool is still sold that way: a 20 oz hammer is a 20 oz hammer, and nobody asks for a 567 gram one.