This is a Handle that can be used on any mill vise with a .55" diameter Hex screw. The handle includes a printed center HUB,3 x printed BALLS and 3 x 3/8" x 4" steel rod. I used quick set epoxy to assemble everything.

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no supports , large round face of the center Hub down on the print bed . Print Balls with the Hole on the Print bed surface.

You will need to drill out the Hole for inserting the 3/8" steel rods. Hand fitting may be needed to fit the Hex hole to the Vise Hex, I recommend fitting the hub to the vise before epoxying everything together.