Auto body pros and serious DIY restorers, this is a classic tool. The Ingersoll Rand 315G is a heavy-duty straight line air sander built for one main job: leveling and smoothing body filler (bondo) and primer on large, flat panels. It's a workhorse in body shops everywhere.
It uses a \straight line\ or \reciprocating\ action, meaning the sanding pad moves back and forth in a straight line (not orbiting in circles). This is the preferred action for final blocking and leveling because it doesn't leave swirl marks and helps create a perfectly flat surface.
It's powered by a tough twin-piston air motor that delivers 3000 strokes per minute. This gives it plenty of power to keep going under pressure without stalling. The pad size is 2.75 inches by 15 inches, which is ideal for covering large areas quickly.
Features include an ergonomic grip to reduce fatigue, quick-action paper clamps for fast sandpaper changes, and a reputation for durability that Ingersoll Rand is known for. You'll need a capable air compressor to run it (check CFM requirements).
If you're doing major bodywork, building a hot rod, or just want professional-grade results on your projects, this sander is an essential tool. It's part of their more affordable \Edge Series\ but still delivers that legendary IR performance.