Antique Evinrude Outboard Propeller Laser Cleaning — Marine Restoration
Pulsed fiber laser removes heavy marine corrosion, barnacles, and old paint from a vintage Evinrude aluminum-bronze propeller — no abrasives, no geometry loss.
Photos
Project Summary
Challenge
Heavy marine corrosion, barnacle deposits, and multiple layers of old paint had built up on the aluminum-bronze blades of a vintage Evinrude outboard propeller — traditional abrasive blasting would have altered the blade pitch and geometry.
Approach
Pulsed fiber laser cleaning was calibrated to selectively ablate the corrosion and paint layers at the contaminant-to-metal interface, leaving the substrate untouched and preserving the original blade form.
Outcome
All marine corrosion, barnacles, and old coatings removed in a single session with no measurable change to blade geometry or substrate surface finish.
How It Was Done
- 1
Photograph propeller before cleaning; document contamination type (barnacles, oxidation, paint layers) and coverage area on each blade.
- 2
Set laser to conservative pulsed-fiber baseline for non-ferrous alloy (low fluence, moderate scan speed) and run a 5 cm² test patch on a low-visibility blade face.
- 3
Inspect test patch under oblique light to confirm paint and corrosion are removed without pitting or color change in the aluminum-bronze substrate.
- 4
Clean each blade face in systematic overlapping passes from hub outward; reduce fluence by 20% near trailing edges and blade tips where material is thinner.
- 5
Rotate propeller and repeat for reverse blade faces; use a second pass at reduced power over any barnacle attachment points with residual calcification.
- 6
Photograph finished surfaces; verify blade geometry with calipers at leading and trailing edges before returning to customer.
Customer Feedback
I recently spent a day with Z-Beam running a wide range of real-world laser ablation tests on antique and restoration items, and I was extremely impressed with the rig, equipment and the support provided by Todd Dunning.
Todd came out and worked through multiple test scenarios with me involving antique outboard motors, vintage National Cash Registers, old scales, wood components, and other restoration pieces. The goal was not a simple demo, I wanted to thoroughly evaluate how effective the laser ablation would be across different materials, coatings, finishes, oxidation levels, and restoration situations. In essence to bypass the video hype and see if this solution would be a good fit for my line of work.
What stood out most was Todd’s willingness to experiment, adjust settings, explain the process, and genuinely work through the pros and cons of each approach. We tested a broad gamut of materials and applications, and the experience gave me a much better understanding of where laser ablation excels compared to traditional media blasting methods.
As someone who already owns new media blasting equipment, we both agreed that I should focus on soda and glass bead blasting. The decision had nothing to do with the quality of the Z-Beam system or the support I received. In fact, the experience increased my respect for the technology and its potential, especially for delicate or high-value restoration work.
If you are considering laser ablation for antiques, restoration, industrial cleanup, or precision surface preparation, I highly recommend spending time with Todd and the Z-Beam team. Very professional, knowledgeable, patient, and genuinely interested in helping customers understand the technology before making a decision.
Phillip Deák