8 hours? Wow! Including machine-shop time to attempt to square the "angular mounts" to keep the corners of the base square, and especially the uprights, cost most of 40 hours. The die-cast pieces had absolutely no surfaces against which to reference others. We had to machine each piece unto itself, by a professional machinist. Total mechanical assembly beyond that took nearly 30 hours, plus wiring 20 hours beyond that. all done by senior electro-mechanical engineers. Not a toy the the faint of heart.
Now we are working on why, when the 15VDC is applied, the USB LEDs extinguish.
One unhappy camper.