Siroflex made Rock’N’Mold as a system for making decorative faux stones. The tape walks through the molds, the mix, and the plan for turning concrete into cobblestone paths. The label gives Siroflex of America in Van Nuys, California.
The pitch says “The elegance of cobblestones is now affordable” and claims a path can be made for forty cents a foot. The instruction gets practical fast: less water makes a drier mix. Nobody was trying to hide the trade secrets.
The ending has tips in the lower third over a black screen, then the words “HAPPY ROCKING.” The music continues. They had reached the end of their ideas before the tape reached the end of itself.
It was streamed February 3, 2026.
