This is a screw driver design. Its made to demonstrate some advanced shapes. Its for lower torque applications. It is printed in two parts with a metallic insert to hold the bits. The driver is slid together and glued with epoxy. The center hole in the handle is meant to be drilled out to be a snug fit with whatever bit holder you used. The links below are to the bit holders and epoxy I purchased. Just slide it all together to test fit. Slide apart and generously coat unseen surfaces with epoxy and allow to dry.
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