Every rotary tool in the drawer eventually gouges something: a spinning head drags abrasive in a circle, which is exactly the motion that ruins a freshly printed part or a moulded seam. The NeoSander swaps rotation for a linear reciprocating drive at up to 13,000 strokes per minute, so the abrasive moves in a straight line and the surface comes up flat instead of scuffed. It is cordless and small enough to hold like a pen, and it went through a Kickstarter campaign that pulled in more than 14,000 backers before landing on Amazon. For anyone who sands in places a full-size sander cannot reach, it is the tool that was missing.
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