German method - Anyone knows how to Refill HP 56, 74XL?

[Fredc]

Hi all,

I have been searching on the web for weeks but still can't find any information on Refilling HP 56, 74XL by the German method. I have asked the ink supplier and their technician said he heard some people have tried to adopt this method but none has succeed.

I have all the ink, syringe and needles to refill my Canon MX870(btw. Anyone knows if I can refill a HP cartridge using Canon formulated ink?) I have a friend has 2 HP printers and want me to refill for him. I don't want to use the top inject method because I need to replace the paper labels, would tape works well if I just pierce a needle whole one of the top openings for refill? Will it leak if I just use scotch tape to cover the needle hole?

I would like to know if anyone has successfully adapt the German method on HP 56 or XL cartridges? Why it won't work on HP cartridges? If I order replacement labels, do I have to match the model numbers? Where would be a nice place to order these labels(US/Canada)? I saw one ink supplier have labels but it doesn't carried these two models.


Any sharing/suggestions would be appreciated. Thank you very much guys.

 

[pharmacist]

Actually these cartridges most be refilled from the breathing hole: the german refill method can only be performed on the HP 364XL and similar cartridges. Just pierce the needle through the paper labels and tape them after refill.

 

[Fredc]

Thank you pharmacist.

However, do you know why German filling method won't work on these old cartridges? I like them to be airtight. I heard many many guys having leaking causing a mess inside the printer -- with top refilling. Is the needle hole so tiny that a tape can seal the hole and make the cartridge air tight again? Labels are kind of expansive, I saw them on Rjettek(and guys check their OCP ink! They are even better than my canon manufactured ink) cost 0.36 for HP 56!

I really like the German method and want to save a dollar on replacing the label for every refill lol.

Thanks guys.