Build your own CNC machine/laser with CNCLib and CNCStepper.
Both projects are on github.

https://github.com/aiten/CNCLib
https://github.com/aiten/CNCStepper

CNCLib is a Windows and Web application.

The web application is hosted here: https://cnclib.azurewebsites.net

• USB Port
• Axis count and size
• Probe definition
• Initial commands
• Custom commands

• Send commands (gcode)
• Move axis
• Define zero-shift
• Read/Write SD
• Define rotations
• Configure CNC machine by writing to the Eeprom
• Watch command history

• Scroll
• Zoom in and out
• Rotate
• Define colors for machine, laser, mill, ...

• Import as it is
• Add linenumbers
• Convert e.g. g82 (drill command) because your machine does not support the command

• Import HPGL with "Resize" and "Move"
• Option for "grave" => the CNC program will follow the line
• Option for "cut" => the CNC program is created with an offset (laser-size or mill diameter)

• Import Image - for laser
• Dither

• Differnet hole shapes (diamond, heard, circle, ...)

With this import option a CNC program is created to cut holes into e.g. a paper. The width of the holes are calculated from the image depending on the brightness.