depends on what you're engraving... stainless or blued rifle barrels, polished stainless, most aluminum, powdercoated or painted stuff, ANYthing abrasive will scratch these items... you only get to touch with clean rag, maybe...
You need to keep working on the hatch routines; try something like this:
hatch 1 10° angle .05 spacing .05 offset in RED 100% power 800 speed 35 frequency 1 loop
hatch 2 160° angle .04 spacing .02 offset in BLUE 80% power 1200 speed 45 frequency 1 loop
hatch 3 310° angle .025 spacing .007 offset in GREEN 50% power 1500 speed 50 frequency 3 loops
use the 'disconnected' hatch, NOT the connected hatch...do NOT 'follow edge once' on any of these hatches.
DO set the "mark contour" to mark AFTER engraving...
NOTE- marking the contour is done in BLACK, which is why I didn't use it in the hatches, it provides a needed 4th color
...
Set the black color for 3000 speed, 30% power and 60 frequency. THEN, hit 'advanced' and turn the WOBBLE on.
Set the wobble for .015 diameter and distance
The idea is this:
The RED hatch digs deep, but keeps away from the edges-
The BLUE hatch digs a bit less, and gets a little closer to the edges, AND cleans up the RED pass-
The GREEN hatch is faster and enough less power to about half the work of the RED pass, but DOES add depth, and cleans up the RED and BLUE passes...
The GREEN hatch is still not quite to the edge, but is close enough-- the BLACK mark-contour pass runs ON the edge, cutting a fast, low power .015mm wide circular swath, which in a perfect world will essentially polish the outlines and remove any edge burrs while doing it...
This is all just a starting point, your machine will need several tweaks... like, settings that worked on my ebay2 fiber didn't work on my ebay1 machine, as 1 is more aggressive due to the different lens. Just takes a few practice runs to get an idea of which passes to make work harder, etc...
And it may take 30, 40, 50 or more repeat passes to get some good depth. And it may seem too time consuming- but when you get that great result you're after and DON'T have to spend 2 or 3 minutes deburring, the extra engraving time becomes a non-issue. As does the time to deburr..