SL10 is aligned to the hexagon base on two edges, SL8 is aligned to two vertices.

  • drrodneymckay_@sh.itjust.works
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    1 day ago

    My guess is the SL10 is wide enough that it needs the extra space available point to point, and as such is the only one that gets precision placement during machining.

    I don’t think I’ve seen a how it’s made for driver bits. Would be interesting to know what special steps are needed.

    • SippyCup@lemmy.world
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      1 day ago

      Hexagonal material is fed through a die and held in place while grinding wheels push in the hollows in each face, generally simultaneously. The tip is cut off and sent to another process to finish the back and deburr.

      The alignment of the head is intentional on both parts. Generally you want the flats to continue all the way up the side. Particularly wide flats have to be aligned diagonally.