A Stanley 101 finger/block plane which has been modified through the addition of a rear handle which sits inside your palm. The handle is wooden and has been painted black. It is affixed via two screws which hold it in from the underside. The holes have been countersunk so the screws dont protrude or otherwise impede the sole. The handle is easily removed, but this will leave two small holes in the base. I doubt this would affect use and personally I think the handle works pretty well, from an ergonomic perspective.
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