People keep asking me which is
easiest inkjet cartridge to refill and answer has been same for years now. Rather than tell you now I'm going to work from bottom of pile upwards.Probably hardest cartridge to refill is HP C6578. If you've mastered this one give yourself a hardy pat on back. HP color cartridges like C1823, forbearer to C6578, have been a challenge to refillers because of unique design that I'm sure was carefully engineered to thwart refilling.
Conversely and ironically, HP couples this with a black cartridge that is a snap to refill, 51645A and C6615. Go figure. But we still didn't get to easiest one to refill. Keep reading.
Lexmark cartridges have followed same basic designs as HP. You can see a remarkable resemblance in Lexmark 12A1980 and its counterpart 15M0120 to HP's 51625A and 51649A color cartridges. All of these cartridges are a pain to refill but can be done with great success if you know secret, and that is to remove sponges and clean them with warm water before refilling.
Lexmark's 10N0016, 10N0026, 18L0032 and 18L0042 are remarkably similar to HP's C6656, C6657, C8727 and C8728. Not surprisingly they refill same way and results are mixed. Occasionally I'll receive an email from somebody having problems refilling these cartridges but it usually is because they are refilling to fast or something like that.
