Because no two setups are identical. Tube age and wattage drift, lens and focus, air assist, material batch, ambient temperature, and mirror alignment all shift results. A setting from the library is a starting point, not a guarantee.
Run the setting on a scrap piece of the same material, check the result, and adjust power/speed slightly if needed. The built-in Test Grid Generator (see Tools) makes this fast.
Aug 28, 2026