Dried ink on printer cartridges can render your expensive ink unusable, but blogger Bucky decided not to toss the cartridges out and instead soaked the base of the cartridge in WD-40. The result: a cartridge that works again.
I got a brain-storm of an idea the other day and decided to try soaking the base of the cartridge in WD-40 to see if it would soften and clean the dried ink and holy crap - it worked!!! (I soaked it over-night and then wiped it off good before reinstalling it in the printer.)
I had to run the printer through three head cleaning cycles afterward, but it cleared the clogged nozzles and it is now working perfectly.
Since printer cartridges are rather expensive, this tip should help save you money while helping you get the most out of your ink. Thanks, Lacy! AU - WD-40 is a very handy lubricant-cum-fix-all spray you can get in the US - I've found similar stuff here under a different name. Your local hardware store should be able to help you out.