Here's how to use the third-party cartridge with HP902 cartridges. We're going to transfer the chips over. Let's get to work.

These are the startup cartridges that came with the printer. We have shown how to turn off-chip info and let it print past HP's page limit. However, we like the third-party cartridges for two reasons. Firstly, they have a double chamber design, which hosts more ink and the more straightforward to refill. You unplug the refill plug and fill it with the ink, and put the plug back. Secondly, they have a transparent casing, which we can see the actual ink level quickly. BCH has a blank cartridge body at www.bchtechnologies.com under refillable cartridge for HP.

The cartridges will come with orange clips and silicone washers, but they don't come with chips. Therefore, we will use the chips from the startup cartridges and mount them onto the printer. Once mounted, the printer will take any cartridges, or even better, we can install a continuous ink system later. We're going to show how to do it in video three.

[silence]

We are going to make two cuts. The first cut is along the cartridge bottom seam. The second cut is right in front of this tab. [grinding] Wear protective glasses and use a slow speed. If we use high speed, the melting plastic will interference with the cutting. Remember to write down the color of the chip that you make.

Then we'll work on the black cartridge and then the cyan.

The yellow chip escaped, and that couldn't be found again in the process. We had to use another 902XL Cartridge.

We have a silicon washer installed. The installation is simple. Have the washer's short side pointing towards us and the more extended side point towards the printer. Lay the washer on top of the ink intake and press it down gently. There are four brass pins on the printer. We need to allow these pins to have contact with four plates on the chip. The black color has a tab, which helps us to decide where to install the chip. We put a piece of duct tape on top of the chip and lined up the notch with the tab.

It turned out. The chip is still too thick. We need to take the chip out and grind it down. Here's our second try. To make the chip thinner, we'll put the chip on a piece of duct tape, which helps us hold the position. Then we grind it down.

When you start the color chips, for those chips at the back of the chip holder, touch the back wall, and the chip will line up nicely.

Give a slight push on the cartridge tab and make sure we hear a click. If the chip is too thick and the cartridge wouldn't click in, we'll need to grind it down again.

Now it's locked. We did the same thing for the remaining two colors.

To refill, we need to put the orange clip back. Tear off the yellow sticker from the cartridge, which we will expose an air hole underneath. Remove the refill plug and start filling. We will see ink flow to the front chamber. If we don't see this, then the air hole is still blocked. We can open it with a pin.

Now we put the refill plug back. If a cartridge is refilled correctly, it shouldn't be dripping ink after removing the orange clip.

After I refill all four of them, I insert them here and make sure none are dripping ink.

That means we install a used cartridge. This means somebody didn't write down their cartridge color, so other chips are swapped between the magenta and the cyan. We need to change them back.