Laser Cleaning Antique Railroad Signal Lamp

Alabaster arrives chalky under soot and handling soil. After the pass that soil is gone and the soft hydrate is still intact, not grooved or sugared.

Aluminosilicate cover glass arrives filmed with soil and fingerprints. After the pass those films are gone and the pane stays clear, not starred or marked.

Bluestone patios look grimy and dull at the start. A stopped pass leaves the flag clean, not split or scaled along a garden walkway.

Borosilicate flasks look filmed and cloudy at the start. Once the operator stops, the residue is gone and the vessel is uncracked.

Brass knobs look brown and sticky at the start. A stopped pass leaves them golden, not salmon-colored and powdery on the knob itself.

Cast iron arrives under rust and foundry scale. After the pass those films are gone and the graphite stays in the metal, not blasted out of the face.

Iron arrives under rust and mill scale that hide the face. After the pass those films are gone and the metal is bare, not abrasive-blasted or pitted.

Mahogany arrives under varnish and stain that hide the figure. After the pass the laser leaves that open grain in place, not sanded flat.

Nickel arrives dull under oxide and heat tint on plate. After the pass the laser leaves the metal bright, not thinned or pitted through.

Slate roofing looks stained and sooty before work starts. Afterward the operator has cleaved sheets that still hold together, without flake-off.

Soda-Lime panes arrive under paint, soot, and soil. After the pass the laser leaves the clear glass intact, not checked, scratched, or hazed.

Stainless 304 vessels look rainbow-tinted and dirty before work. Afterward the operator has a bright, still-passive surface without a scar.

Carbon steel looks scabby with outdoor rust before work starts. Afterward the operator has bare iron that is still sound, without a pit track.

Tool steel dies look filmed and oxidized before work starts. Afterward the operator has a still-hard working land without a blue temper stain.

Inconel parts arrive under scale, weld tint, and process soil. After the pass those films are gone and the wall is not ground undersize or warped.

Battery busbar faces looked dull and filmed before joining. Once the head finished, the land showed through so amps could move across.

Precision surfaces looked shiny but lied to the inspector. Once the head finished, the land was honest and the shape had not been cut.

Automotive EV joins looked filmed and dull before the station fired. Once the head finished, the metal showed through so the bead could wet out.

Heritage architectural work looked stained and tagged on the elevation. Once the head finished, the stone showed through and the old character remained.

Paint and coating sit on steel and aluminum as a thick film. After the pass that film is off and the metal is ready to inspect or recoat.

Rust sat as a flaky orange crust on damp field plate. Once the head finished, the metal showed through and a fresh coat could go on.