That diameter influences the aggressiveness of the machine. At the same time we evaluated the dust collection of the sanders, noting any dust that was deposited on the tool, that was left on the board or was visible in the air.Ī look at the amount of stock removed should also involve a study of the orbit diameter of each sander. (The Festool sander uses a Festool disc due to the hole patterns.) When the fiveminute cycle was complete, we weighed each board to find the amount of stock removed. Then we sanded each board for five minutes using an identical, unused #120-grit sanding disc. Pieces of surfaced poplar were cut to the same size and weighed to three decimal places. In order to test the tools’ aggressiveness and dust collection, we ran the sanders through a simple five-minute test. The other important issues are dust collection and whether or not the tool is aggressive. What we found to be the most important aspects of these sanders were attributes that do differentiate the tools: How the tool fits your hand, whether the switch is easily accessible to most hands, and how easy the tool is to control. Each one sands a surface smooth and flat without leaving huge swirls. But as testing began, we discovered that each sanders does the job it is supposed to do. Next, we envisioned an article full of charts demonstrating how different these sanders are. At high speeds the sander has the potential to “walk” and create sanding scratches that require additional attention. A sander can move wildly as you traverse that valley. But why should you purchase a variable-speed sander versus a single-speed sander that costs a few dollars less? Where it helps, in our opinion, is when you have to deal with boards that aren’t exactly flat, such as where you’ve worked a glue seam with a scraper and ended up with a slight valley on the surface. The reason for selecting tools with 5″ pads is that most stores carry a wide variety of grits in that size. In order to make the test manageable, we decided to limit the test to variable- speed tools with 5″ pads. As we prepared to test random-orbit sanders, we considered the vast number of tools available.
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