With this reproduction I hope to provide the best H-500 Computer Lab experience possible. What do I mean by that? Well...

• Visually my reproduction will be clearly recognizable as an H-500. I will strive to provide an outwardly accurate appearance of the original to the best of my ability and within the constraints of the implementing technologies.  (Bear in mind that I can't afford one of these so I will be working from images and the kindness of actual owners to provide me with details.)
• Operationally my H-500 will perform like the original. A user will be  able to work through the experiments in the Lab Workbook without change or issues.
• I would like for this project to be easy to well, reproduce. To this end I will only be using 3D printed parts and readily available components and materials. 
• I will try to keep the total project cost to a minimum.
• A complete set of instructions, parts list, and STL files will be posted to Instructables at the completion of this project so that others could make one should they choose to.

So hopefully my H-500 reproduction will look and work like an original, but I can guarantee (at least for version 1) that the very cool PCB with "surface mounted" components used in the original will not be part of the final design in order to meet cost and reproducibility goals.

 (Maybe version 2?)