Tip for bringing out an etch https://www.youtube.com/watch?time_continue=117&v=fFwXT2XgQKs

Lasers
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1

Tip for bringing out an etch

2

I would imagine it is important to apply a good layer of finish to seal the surface before engraving.

3

That is always a good idea.

4

As someone who does a lot of engraving infill I definitely agree that you would need to seal the wood first to help prevent edge bleed. Also a shallow engraving will work better.

5

very nice