This detailed post from modeling forum member Panzerpaul nicely shows off the skill and hard work that went into creating his radio-controlled replica of a WWII-era German tank destroyer commonly called a Hetzer. To house the R/C electronics and other guts, the hull has to be hollow:

This model is essentially a resin top hull, metal lower hull, reinforced running gear and lots of brass PE. Rather than make a master hull from scratch, I took one from a static resin kit and cut off the side, rear and front walls, and then hollowed out the underside of the remaining upper hull. This took a lot of time with a Dremel cutting tool and created a tremendous amount of resin dust, which means you wear a protective mask.

The real thing is almost 21′ long; at 1/16 scale, Paul’s model comes in at just under 16″.

To the resin upper hull, Paul added details too thin for resin in soldered brass:

The completed model has been detailed, finished, and weathered to an extent that’s not usually seen in R/C models, in my experience:

In short, as Gar put it, with characteristic pith: “Daaaammmn.” Be sure to check out all the build photos over at Small Scale Military Headquarters. [Thanks, Gareth!]