Link is http://resources.renishaw.com/downlo...en&inline=true

Probably a little lighter than I want, but not much. The sort of thing I want to make may be (examples to show range)

Frame side in aluminium machined from 2mm alloy plate, ribs "T section" 2mm by 2mm with up to 60mm unsupported.
Compressed air turbine in titanium (a bugger to machine with anything) 26mm dia 6 grams weight - must be inherently balanced (hence need accuracy)
machinable castable wax model to try casting iconel model of same if titanium doesn't work.

The most common needs are accuracy and a really high spindle speed.

Mike