It keeps the nuts and bolts from scratching my polished table 
UPDATE: As this project unfolds, I am starting to think this might be out of the average DIY'ers realm. Tonight was my first attempt at "bonding" of the plastic parts for the out case and whilst so far it looks good, I won't know until tomorrow how well I have done. The main bodyI got the revised prototype back today and assembled it. It went together much easier than the first, but I think there is still some holes missing. I'll see if I can snap a photo and post it.
So supply a tube of glue and let them go for it? I don't know. We will have to see how this all goes when all is said and done.If it's only a matter of accurately gluing and or bolting bits together, I don't see that that would be too difficult for the average DIYer!