[Rod]

Hi Ray

I have had good luck reducing turned edges with short straight strokes mirror on top with a slightly oversized lap. Same idea as Mel Bartels. This technique should work with a standard lap, it will just take longer. You may need to work for a couple of hours to see a significant reduction. You’ll likely get some surface roughness and a central hill in the process but these are easily fixed.

A well pressed lap is essential. Make sure the lap is micro faceted and not glazed. If the lap looks shiny, get a brass brush and give the surface a light scrub. Gordon Waite shows this in one of his videos. The micro faceting and brushing improves contact significantly.

When you examine the edge, look at the image outside the ROC, it tends to show the edge defect more clearly.

Hope that helps.

Rod.