Considering the overall outlay, I feel this is possible. Given the fill factor of the diodes, the output should be collimated with achromats to a nice size. The planned footprint of the laser head is 130mm X 145mm, with drivers and all electronics mounted on an exterior PCB inside the driver module assembly. Comments? Just planning stage for now...I may actually build it for kicks and giggles. I was thinking of a PL based project....any other intrest? That way all info would be shared and problems freely discussed and solutions opened. This could also be done on a smaller/larger scale...keeping in mind the final outcome and fill factor at the PBS cube.