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Rust Repair Done Right: Why Cutting It Out Beats Covering It Up

Painting over rust buys you a few months. Cutting it out and welding in clean metal buys you another decade. Here is how our fabrication shop handles it.

May 14, 2026 5 min read

Rust is not a paint problem — it is a metal problem. Any repair that leaves corroded metal behind the finish is a countdown timer, not a fix. Our fabrication team takes the harder route because it is the only one that actually lasts.

Find every affected area, not just the visible one

Visible surface rust almost always has a larger footprint underneath. We use magnets, borescopes, and mechanical probing to map the full extent before deciding where to cut. Rocker panels, cab corners, wheel arches, and bed floors are the usual suspects on trucks in the Columbia Basin.

Cut, weld, and seal

Compromised sections come out. Clean, correctly gauged replacement metal goes in, welded with full-penetration joints and dressed flush. Every seam is sealed on both sides with a modern seam sealer and coated to keep moisture out for good.

Protect the inside of the panel too

This is the step most cheap rust jobs skip. We apply cavity wax and internal rust inhibitor to the back side of the repair before we ever spray paint. Corrosion almost always starts inside a panel and works outward — treating only the outside guarantees the rust returns.

Match the paint and move on with life

Once the panel is straight and protected, it goes through the same computer-matched paint and clear-coat process as any collision repair. Done right, a rust cut-out looks factory and lasts longer than the original panel did.

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