back scratcher - industrial style

This back scratcher, with its unique design, allows one to easily reach around and scratch where it itches.

Construction Details

Insert the shoulder pieces into the handle as shown, paying close attention to the orientation of the handle.

Push the shoulder pieces into the handle until the ridge is reached.

Then, with a firm grasp on the handle, with a quick motion, slam the assembly onto a worksurface. forcing the handle into place. Assemble the other parts as shown below.

Printing Concerns

When printing on an A1, the ends of the shoulder pieces tend to curl. As such, I have included an alternate build plate for printing the shoulder pieces on an A1 which includes the use of brims.

Hardware

2 - M4 x 35 mm socket head machine screw

5 - M4 x 45 mm socket head machine screw

7 - M4 nut