Alabaster Laser Cleaning
Alabaster cleaned to calcite purity without thermal damage — safe at 0.5–2.0 J/cm², far below the 60°C degradation point. Bay Area on-site service.
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Todd DunningMSUnited States
Optical materials for industrial photonics systemsPublished
Apr 23, 2026
1924 Evinrude Outboard Propeller Laser Cleaning
Pulsed fiber laser cleaning restores a 1924 Evinrude outboard propeller and drive by removing heavy marine corrosion, barnacles, and old paint from aluminum, bronze, and steel while preserving original geometry.
What This Video Shows
This marine restoration shows pulsed fiber laser cleaning on a 1924 Evinrude outboard propeller and drive. Heavy barnacles, oxidation, and old old coatings are removed from mixed mixed metals, revealing clean surfaces.
Equipment Used
- Pulsed fiber laser cleaning system
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Professional Laser Cleaning
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Frequently Asked Questions
Does laser cleaning damage aluminum or bronze propeller blades?
The laser energy level is calibrated to remove contamination from this 1924 Evinrude propeller and drive parts without marking, pitting, or changing the surface below. Parts are checked visually and tactilely after cleaning to confirm the surface is undamaged. No abrasive contact and no chemical exposure means dimensional tolerances and surface finish are preserved.
How does laser cleaning compare to traditional marine restoration methods?
Traditional marine restoration on a piece like this 1924 Evinrude typically means media blasting or acid dip — both of which remove material and can pit aluminum or etch bronze. Laser cleaning strips the barnacles, corrosion, and old paint in two to three passes without touching the underlying metal, so the original blade geometry stays exactly as cast. On a 100-year-old propeller where replacement parts don't exist, that difference matters — you get clean metal.
What marine contaminants can you remove?
We remove barnacle growth, marine corrosion, and old antifouling paint from aluminum, bronze, and steel propeller components. On a piece like this Evinrude, decades of corrosion typically come off in two to four passes, leaving clean metal across every surface including curved blade faces and hub recesses. Barnacles that are mechanically attached release cleanly without chipping or prying, so there's no risk of gouging soft aluminum or cracking aged bronze.
Which settings matter most when restoring 1924 Evinrude Outboard Propeller?
The most important adjustment on mixed-metal marine pieces is matching the pass speed to the material — aluminum needs a faster pass to avoid heat buildup, while bronze and steel can take a slower, more thorough pass. On this Evinrude we worked aluminum surfaces at higher speed and let bronze hubs take a slower pass to drive off heavy oxide layers. Each metal came clean in two to three passes, and the blade edges retained.