Something needed handwork, but then an ingenious solution

For the predecessor of my Canon printer I bought always very cheap cartridges from other manufacturers. Such cartridges are for the current model still available, but almost as expensive as the original. For about 35 euros for a small set cartridges I thought to myself, I give this set a chance.
The initial charge takes a little because firstly the opening on the top of the cartridge (I took a screw therefor) must enlarge. Then raise ink in the provided syringes, pour into the cartridge hole with adhesive seal (optional), clean syringes, ready.
The print quality was from the first page (or Photo) very good, no noticeable difference to the original ink.
400ml ink for 6 euros are a sensational offer, the purchase of original cartridges you would have to pay for about 400 Euro!