I thought I could rejiggle it a little to remove any need for supports at all. No idea how well it will work ask me in 20 hours when its done printing. parts print in orientation provided all parts will fit on a 334 printer such as a CR-10s which I am printing it on now.
I consider the design no good. the little pegs on the cartridge sides are too weak. I am going to rework them into simple holes and then just stick a piece of filament through!
not only will it be stronger smoother and more flexible but a lot easier to assemble as well.