A Rose Engine needs rosettes - they are available to purchase but where's the fun in that?, below are a few pictures of my attempts at producing them using recycled Perspex.
Cutting the keyway in a rosette blank.
Messy - turning a pumping rosette blank from 3/8" Perspex
Milling a 7 bump rosette on the Jig Mill.
Flycutting a 24 dip rosette
Flycutting a 9 segment pumping rosette from 3/8" Perspex.
9 & 12 segment pumping rosettes.
Adjustable rosette. Drilling & tapping 24 x 6mm holes.