Front derailleur adapter (braze on)

This is an adapter to mount a braze-on front derailleur on a Mongoose Malus Fat bike. The Mongoose Malus comes with a single sprocket front, I wanted to piece together a triple. This bike has a bottom bracket size around 112 mm, so I had to offset the deraileur and the cable stay as well.

There are 4 parts here, put together into 2 assemblies, each assy clamps onto the seat tube separately. The cable stay has a spacer to keep it from moving up the tube if the cable force is large. Printin