Printing a file to multiple printers at once? Possible?

[Roxy]

Shouldn't you be able to since they run on different coms? Maybe with different software?

That's the great thing about Open Source! If you care enough, you can make the change you want. You could take PronterFace, and have it send the lines of the GCode file to each printer at the same time. There is a communication protocol between the computer and the printer to acknowledge each line that is sent. So you would just wait until both printers have successfully received a line before sending them the next line.

But unless there is a real reason to do this... Opening two copies of PronterFace and telling one copy to deal with one printer and the other copy to work with the other printer makes more sense.