Benbox Laser Machines/CO2 Lasers/3D Printers

I am etching some material that reacts to the laser at low power. My problem is the first pixel on every line, from both directions, is much darker than the rest of the line. I am not sure of the exact length but it looks like single pixel under the microscope.

Look at $110 & $120.

That make no sense. Perhaps you changed the parameters such as the max rate.

The three wires are GND, +12V, PWM. Traditional colors are GND =BLACK, Power= RED. You need to match the the signal names, not the colors. Looks lie your second picture is designed to use an independent power supply. If your go that route to need to connect the GNDs.

With a 3-wire connection most laser modules use a high (> 2V) to signal ON. The controller firmware drives this signal LOW to turn the laser OFF. If that active drive signal is missing the input on the laser module will float high resulting in a steady ON condition. Many of us have installed pull-down resistors on the PWM line to avoid this condition. I typically use a 3.3K. Cost is about 0.02USD.

If I understand correctly you are adding text to an existing etching, Any idea of the process used to create the originate etching?

Don,

There are a lot of 0.2mm burn line segments in the james_watson_raster.nc file. The resolution is also set at 0.2mm. I don't know the algorithm used by T2 to convert image resolution but I find that 0.1 works better on slate. I also find the the minimum line length needs to be 0.3mm.

If it is possible post the source art work. James Watson any relation???

George

I am planning on trying the dual color scheme. First layer is a color, second is flat black. Depending on the laser power you burn just the black exposing the color or all the way thru to the tile.