rentager.blogg.se

On GCode devices, enable 'Overscanning' in your Fill or Image layer setting. Output is shaky or wobbly ¶ Output is slanted or skewed ¶ Edges of engravings are burnt or too dark ¶ If your controller expects "1000" to mean full power, and LightBurn sends "255", you'll get roughly 1/4 the output power you expect. The number itself doesn't matter much, but the controller setting and LightBurn have to agree. Current versions of GRBL default to 1000 for this setting, while older versions use 255. The 'S-value max' setting in LightBurn could be incorrect - this number tells LightBurn which 'S' value corresponds to maximum output for your machine, normally set in the $30 firmware setting.The correct solution is to simply use a speed within the allowed speed range of your machine, or, if you want the same behavior as LaserGRBL, click the 'Constant Power' toggle switch in the layer settings of LightBurn: However, if you ask the laser to go faster than it actually can, it will never reach the requested speed, and never reach the requested power level either.

In this way, the output burn is much more consistent. As the laser head accelerates toward the speed you request, the power level is increased as well. With variable mode, when the laser is stopped, the power level is zero. LightBurn uses 'variable power' mode by default (M4), where LaserGRBL uses 'constant power' mode (M3). This is the most common problem we see, especially when comparing LaserGRBL output with LightBurn.