Iron Fist Karate Trainer

thingiverse

A friend asked me to make her some handgrips to hold boards for her Karate class. These slide onto the edge of a 1" board. In the US, a 1" board is actually 3/4" (19mm) thick. The purpose of the handgrips is to prevent the student from accidentally punching the instructor's hand while attempting to break the board. These have been through a great many changes, as the version numbers indicate. I've put a great deal of time, both designing a printing, into these. I wasn't happy with my original handle, when @Modellaner's handle appeared on Thingiverse and it was a good match for the board holders. Modellaner's handle also went through a few changes in size and shape. Thank you. V4.1 is for small/medium size hands and V4.2 is for larger hands. Please don't change scale when printing, or the board won't fit in the opening.