Most attempts at summer sledding end with a plastic tray skidding uselessly across dry grass, so a wooden board riding on a block of ice feels like a genuinely different answer to the problem. The maker calls it the Summer Sled, and the idea is simple: put the slippery surface back under the rider by freezing it in place.
The build itself is a nice mix of machine work and patience. The parts were drawn on a computer first, then a Shapeoko CNC cut them from plywood. Wooden handles were glued on, and a textured rubber grip mat went over the top surface. For the ice, a large plastic container was filled with water and the board was set on top to freeze. After 24 hours the ice had solidified and the mold came away, leaving one large integrated block under the deck. The final version measures 17 by 14 inches, with rubber grip tape and a more refined handle design, plus a wide seat for balance and handles for easy transport. There is even a kit with the board, the specific container for freezing, and instructions.
It clearly works: the sled slid down a steep grassy hill in several orientations, including sitting, lying prone, and standing. The maker, children, and an older woman all took turns, and the runs included high-speed descents and the occasional tumble on dry grass.
The trade-off worth thinking about is the freeze itself. A residential freezer needed a full day to solidify one block, so anyone wanting back-to-back sessions would need to plan ahead. The maker also shows the initial prototype beside the final version, and the refinements between them suggest the design is still evolving.
Project by 2cool4school. Watch it on their YouTube channel: