InBetween Insert

Note: in the first version I printed (in the photo), the hole for the turn marker was too small. Rather than reprint it, I just embiggened it with a Dremel. The file here has been corrected and should hold the dowel fine.

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/82D8k1jeoVi