Canon EF 400mm f/5.6L USM Guide Scope Mount

For when you want to mount a guide scope that needs a base that's a little more sturdy. This was designed with the SV106 and its rings in mind, but it should fit anything that has a Synta style dovetail. The dovetail in this model is 90mm long.

Printed in 3 parts, with the top mount and top ring glued together after printing. The two halves are held together with 4x M8x25 socket cap screws with the associated M8 nuts.