Hi. Excuse for my English. I am Italian. If sending can be useful the files Gerber 274X and the files Excellon both created with the Cam Processor of Eagle 4.13. Eagle is maybe the CAE more diffused free. It has some limitation for the dimensions of the board, but she works completely. It would be a good idea to include in Mach3 the possibility to import the fileses created with Eagle like with Galaad. Thanks, Giordano.