Thanks – I've just started hacking something vaguely similar out of solid, partly because I want to see whether I can make a model that looks something like a small 'real' engine, rather than an assemblage of bar-stock that performs the function of one, if you see what I mean.. ..as up until now, that's mostly what I've made..
It's probably a milestone on the road of my advancing years 
Edited By DiogenesII on 18/01/2022 09:41:01