No, it will not mess up your printer. It actually works. It will print fine. But the text on the paper you get will be dye black in. It will smear when in contact with water. How I have done it, not just once but many times on many printers. Never had a problem. Canon's very old printers used dye black ink for printing text. HP did that too. You will find hundreds of ebay vendors selling dye black ink for refilling both BCI-3ebk and BCI-6bk cartridges. The correct answer to your uqestion is definitely yes. The question is there are reasons Canon put two black ink cartridges on a printer. If you refill your BCI-3ebk with dye black ink your text print will not be the same. There will be no harm or any problem to your printer.flashdudette said:one question - I have a lot of black dye - can i refill the black pigment cartridge with it or will it mess up my printer?