Here's one of my favorites. Remove all of your cartridges and punch a hole in them and quickly put them back in printer. Now do fifty back to back print head cleanings while pouring motor oil into paper feed tray. It helps to remove paper so oil can get inside faster. If you see smoke that's a bonus. It means you're doing it right.

This next trick involves use of a ladder and a feather. A chair can be substituted if you don't have a ladder. Any feather will do. Stand on ladder or chair and while printer is on hold feather in one hand and printer in other hand. The law of gravity states that both feather and printer should land on ground at same time providing that there is no friction from air currents or whatever. Now, lets test Newton's law of gravity. Release feather and printer at same time. Did they both land at same time? It might take a few times to get this one right. Practice this one a few times.

Here is one that you can do with your partner. Get a couple of screw- drivers. One person can remove every single screw in printer and other person can put it back together. This is fun at parties.

Last but not least most effective way to kill your printer and make absolutely sure it's a goner is let your kids play with it!

Lets plug in some numbers. Today I checked prices of aforementioned OEM cartridges on Staples web site.

HP 51645A - $29.99 HP C6578AN - $54.99

Our HP790C3B kit refills:

Black - 3 times Color - 5 times

The kit sells for $27.95.

Here is formula with numbers plugged in:

S = (5 x 54.99) + (3 x 29.99) - 27.95 S = (274.95) + (89.97) - 27.95 S = 364.92 - 27.95 S = 336.97

Quite an eye opener isn't it? By spending $27.95 you can save $336.97. I would get some ink on my hands to save $337.00!

I believe wholeheartedly that if more people knew how much money they can save there would be a lot less of these cartridges ending up in landfills.

Just please remember, start small. If you've never refilled before don't start by ordering a gallon of ink.