Herman Miller Aeron Armrest Guide

This is a replacement Herman Miller Aeron armrest guide/indexer for the earlier model chairs that use a spring. Later on the design was updated to not use a spring. The picture of the black piece is my original broken guide.

I designed this piece because I could not find a replacement anywhere. This model is really close and works with sanding but may need to be modified to work directly off the printer. I think the hole is slightly too small and the guide channel is slightly too small. This