I'll add drawings here anyone is welcome to include their drawings ideas as well!
That design is very cost effective, flexible and intended to be built with usually affordable tools. A drill press and chop saw are the two 'high end' tools that would aid in fabrication. I am using stuff from my well stocked junk box before buying anything. I ran the numbers for the raw metal and came up with about $140 before shipping. Others have posted similar numbers so that looks about in the right range.
The author is also a builder/maker and is very responsive to direct email and interaction on CNC Zone. What really hooked me is the author's work on a 3D printhead assembly to fit on the machine. For those interested in it, a double duty winner.
Getting your machine to a prototype stage is going to take some time. What would make your drawn lines easier is a member with a CNC plasma cutter. At least the plate work would be quick. The real price killer would be a spindle head that could cut heavy aluminum stock. The spindle head would have to handle some of the stock tooling - R8, CAT40, Tormach, the list is large. (That debate would be more lengthy than servos vs steppers).
I am still happy to help anyone on this project but until we get some traction, I am building a Momus V2.
I've built quite a few plywood and MDF machines using 22X8X7 ball bearings and find a configuration with 1/8 steel rods most suitable. One side of the track is fixed and the other adjustable.
I use this set up for CNC mills capable of cutting aluminum, 4 axis foam cutting or 3D print with a stepper plastic extruder.
Driver board is the low cost 4 axis driver board offered on ebay or alibaba. Motors Nema23 triple stack. 24 VDC 300 Watt power supply, software Mach 3.