Summary The Metal Delta RepRap v1 uses a upside down Rostock-like stage to move a substrate under a MIG welder. We have demonstrated steel printing using standard welding wire. For details see: G.C. Anzalone, C. Zhang, B. Wijnen, P. G. Sanders and J.M. Pearce, ��Low-Cost Open-Source 3-D Metal Printing, IEEE Access (in press). DOI: 10.1109/ACCESS.2013.2293018 open access preprint How to build, BOM, Instructions - the build is pretty easy by RepRap standards - less than a day when you have the full BOM. Total cost, including the welder is <$1200. Brought to you by [Michigan Tech's Open Sustainability Technology Research Group]( http://www.mse.mtu.edu/MOST) -- we are trying to make inexpensive open-source scientific equipment for everyone- see:Open-Source Lab: How to Build Your Own Hardware and Reduce Research Costs Instructions How to build, BOM, Instructions - the build is pretty easy by RepRap standards - less than a day when you have the full BOM. Total cost, including the welder is <$1200.