Porter-Cable - 3-in. by 21-in. Belt Sander 352VSPorter-Cable’s 3-in. by 21-in belt sander features a variable-speed motor and is designed to sand flush to a vertical surface.
According to belt-sander manufacturers, the biggest sellers are the 3-in. by 21-in. models, so we decided to take a close look at what’s available. The good news is that we didn’t find any glaring performance problems, which made it difficult to pick clear winners. To rate stock-removal and dust-collection effectiveness, each sander and sample board were weighed before and after a timed run. At the end, the difference between the weight of the board and the machine (plus dust bag) indicated how much sawdust was collected, expressed as a percentage. The Porter-Cable sander was well balanced and comfortable to use, with a convenient pivoting dust bag that’s equipped with a zipper. The machine was able to sand flush to an edge. The speed control, however, couldn’t be reached without taking a hand off the trigger. Dust collection effectiveness was 83%.