This is a 3 piece item. I wanted folks even with small printbeds to be able to easily print this. You should rotate the tip but, it might print in the current orientation. I haven't tried.
I printed it at .3 layer height.
It's not a large back scratcher. But, it helps me get to those unreachable areas on my back. It will fit in a pencil holder and I haven't played with scaling it up yet.
I would use super glue to hold the 3 pieces together. Have Fun!

Print at whatever layer height. I printed it at .3
Make sure the pieces fit together before using any glue.
Mine fit together so nicely I haven't even glued it yet.
I did give a fairly large tolerance for a loose fit on the insert design.