SuperMax says its 19-38 drum sander, Model 71938-D, is engineered for ease of use and maximum functionality. The machine can sand 19 in. in a single pass (38 in. in a double pass), and as thin as 1/32-in. up to 4 in. thick. Intellisand technology auto-regulates the conveyor speed, preventing gouging, burning or damaging stock, the company adds.