![]() ![]() The Add, Delete, Import and Export buttons allow you to create, edit, and manually import & export your scanning adjustments with user users, or explicitly make a backup before making changes. See the help for Scanning Offset Adjustment here. Scanning offset is useful when doing raster or vector scanning at high enough speeds that delays in your power supply cause the firing point to be a little behind where it should be. If you know your material is flat, and none of the Z moves will position the laser low enough to run into anything on your work table, this can save a lot of time. Enabling 'Optimize Z Moves' will prevent this constant retract / plunge behavior, only issuing Z moves when the Z changes. Optimize Z Moves ¶īy default, LightBurn will always retract the Z back to the initial height (the material height) after completing a shape with a Z offset. Note: for DSP systems this requires that you are connected to the machine. ![]() This is the simplest way to work, as you just set your focus manually, and LightBurn will perform all moves relative to whatever height your machine is at when the job starts. This setting tells LightBurn to read the height of the machine when the job starts, and uses that height as the starting point for all Z moves, ignoring any specified material height. ![]() Toggle this switch to change the overall direction for Z moves. Most DSP systems have "0" as the highest point, with positive numbers moving the laser head further from the bed, however some systems reverse this. If you to not set relative mode, and do not set a material height, the default of 0 may cause LightBurn to raise your bed to a point where the workpiece could contact the head of your laser. Check that your adjustment is correct by repeating the process.Įnable Z Axis: turn this on to allow LightBurn to control the Z axis of your machine, IE the height of the laser above the workpiece.Įnabling Z control means that LightBurn will always emit Z values for a running job, and therefore requires that you set either the "Relative Z moves only" toggle below, or a material height value on the main cut panel.Measure the distance between the reference point you originally marked and the actual point you marked to determine what offset you need, and enter those values for the Laser Offset.You may need to change the Job Origin setting in the Laser Window. Make sure you have an easily identified point at the job origin. Burn a small dot or intersecting lines at this location.Make sure Start From in the laser window is set to Current Position, and line up the red dot with the location you marked.Mark a location on a piece of material to use as a reference.Adjust the offset value to shift the position of the laser's output relative to the red dot. If your laser has a red-dot pointer that is not aligned with your beam, you can enable the Laser Offset value to compensate for this when framing and positioning. If your laser output is mirrored horizontally or vertically, move the dot to the opposite corner, horizontally or vertically, depending on the direction that the output is mirrored, and that will correct it. If you have a DSP laser, like Ruida or Trocen, the origin is usually where the limit switches are placed, and will will be the corner the laser seeks when powered up. If you have a GCode based system, this is almost always at the front left, regardless of the location of your limit switches. This is the origin corner or 0,0 location for your laser. Note that this setting on GRBL & DSP devices does not affect the laser itself, it's just to tell LightBurn how large the work area of the laser is. Set this to the maximum X and Y travel for your laser. This is the working size of your laser bed. Device Settings Device Settings Table of Contents. ![]()
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