Certo, ecco il riassunto ancora più sintetico, mantenendo le persone verbali originali, questa volta in inglese: --- I built a **belt and pulley drive** for a blower because the previous rope-and-stick system limited RPMs, producing only low pressure and non-solid blooms. The belt allows continuous rotation and higher RPMs. I tested **clay wheels** (heavy but the small one worked) and **cane wheels** (lighter, but with mounting issues). A "floating" cane version worked better, but isn't scalable. Current wheels (25 cm) give 1:10; the new system should reach 1200 RPM (from 960). 50 cm wheels would give 1:20. Future experiments are needed.