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How do I refill a HP Laserjet Printer Cartridge with refill toner? (C7115a)?

We believe we have to make a hole somewhere but we don't know where. Thanks for the help, we need to save a buck or two.

Public Comments

1. Yes a hole is necessary. Check out this site to get a hole maker Good Luck
2. I'd definitely suggest purchasing a kit since you're going to needs caps and seals, as well as something to make the hole. It looks like the kit found here includes everything you'd need: http://www.tonerrefillsnow.com/hp/183.html