The blue was all printed and is roughly 1kg of PLA. The project has set me back between â‚¬800 and â‚¬1000, but that is because I have replaced some parts and bought for stock. This thing is buildable for under â‚¬600.
The STL files will only build you the printed parts. I need to update some parts in the pistons, so those will still change. I am working on cut lists, schematics and assembly drawings. The electronics are ramps compatible, even though I have got a custom piece of electronics to drive this thing.