Gravity Test Run

A corrugated mailing tube was sitting by the recycling bin, practically begging for a second life. I sliced it down the seam with my craft scissors, splitting it into two smooth U-shaped half-pipes. Taping the top run flush against the lower rung of the coffee table gave me a steep twelve-degree pitch, feeding directly into the second channel on the rug. I lined up a solid glass marble at the launch notch and tapped it loose. It shot through the chute with a crisp, hollow hum, bank-turned neatly across the seam, and clinked right into an empty ceramic ramekin waiting at the bottom. Clean trajectory, zero derailments!