The design is intended to be extensible according to your own requirements, using an industrial slotted framing system typically used to construct prototype machinery called 80/20. Precision-cut aluminum frame parts are intended for fabrication via abrasive waterjet machining services and can be assembled like a puzzle. Many parts can be sourced from your local hardware store or home improvement store. Some fabrication using common garage and shop tools such as drill presses, hacksaws, bench vises, and belt sanders is required, but there are no parts that require conventional machining such as milling or turning!
The final product is intended to highlight the level of sophistication available to modern makers and builders who may not necessarily have access to a conventional machine shop or collective such as a hacker / makerspace. Especially for students and minors, access to machine tools may be difficult or nearly impossible in our age of overabundant safety and caution. It is designed to show that the world of amateur and hobby engineering extends far beyond Home Depot and hardware stores - something which is generally unknown to many people who may be interested in pursuing engineering as a career, or aiming to explore it as a hobby.
This build will focus extensively on purchasing parts through online industrial supplier catalogs such as McMaster-Carr, specialty & hobby suppliers like Surplus Center, HobbyKing, and digital fabrication houses such as Big Blue Saw. Having access to these electronic resources, which really only became possible in the past few years, will facilitate students and hobbyists in producing higher quality and more awesome projects.
The resources alone, in my opinion, are all that most readers of this Instructable will need - it is often the case that many people who want to build things and know generally the approach they need, cannot proceed because of a lack of proper resources, whether it be tools or materials. In this case, this Instructable is perhaps more useful as another resource and technique guide, similar to my previous writeups on selecting electric vehicle power systems and building hub motors.