In my recent MR builds, I've used Bill Bedford's etches for brake shoes, hangers and push-rods: the "RCH 9'" pack. The shoe/hanger/push-rod assembly folds up from one piece (with packing soldered in at the shoes and tumbler), so is self aligning and this is vastly easier than assembling from separate parts. I grind off the spare eye from the reversible shoes and also grind the braking faces of the shoes to get working clearance. The hardest job is aligning them on the chassis so that they don't bind on the wheels.
Bill's etch also provides outer V-hangers, levers and guards, but not the right levers for MR practice. The given levers can be bent and filed to the right shape. However, I can't get his lever guards to fold up right (I am clueless with small folded things), so I usually modify 51L parts.
Nice though the Bedford parts are, I'm drawing up some shoe/hanger/push-rod assemblies to be printed. Initially, I need them for 9' 6" wheelbase, which isn't covered in Bill's range. I plan to included alignment aids: holes in the bases of the brake part that align with pegs printed on my baseplate, so that the assembly job is even easier. If these work out, I'll do them for 9' and 10' wheelbase too. I would not try printed levers and guards in Shapeways FUD as they would not be strong enough.
PS: pictures of the CAD for the brake and baseplate parts are now on RMweb: http://www.rmweb.co.uk/community/index.php?/topic/112952-guy-rixons-shapeways-shop/?p=3320646