joe
2
Hi @omar.bakht. Welcome!
Some of the answers you are looking for are here.
Positioning precision to 0.001” (0.025mm)
Engraving at 1000 DPI with 256 power levels
The spot size is a little more difficult to quantify.
Laser Quality — Beam diameter of less than 5mm at aperture and divergence of less than 1.2 mrad
At the focal point, its dependent on the material.
Here is a thread where they talk about it some more.
I believe someone else was talking about wanting to make Fresnel lenses with their Glowforge.
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