Four Ways to Refill an HP Cartridge's Chamber! Front Chamber Refill for HP 902

We're going to use four different methods. Let's use the magenta cartridge for the first method. We flip over the cartridge and drip ink onto it. We add ink, and here the ink overflows, coming out from the bottom. If you refill it correctly, you can see if you put it on a table and pick it up. There should be no ink coming out, which means the pressure is balanced.

The second method is usually done by refill stores such as Costco. Let's take a Costco-refilled cartridge as an example. Costco drills a small hole near the air hole and then adds ink through this hole. After that, they will put a bandage over it. In this case, a small, wet sticker. The bandage doesn't need to be airtight. A piece of scotch tape will do the job.

We are now working on the cyan cartridge. We can see the air hole underneath the letter C. We'll drill the hole between the air hole and the HP symbol. We'll fill it up until the ink comes out. Then, we'll put a bandage over it.

For the third method, we use a tool called a refill pedestal. The device can be found on eBay for about $10 a color. However, the black pedestal can fit all cartridges. If you are on a budget, you can buy a color pedestal. This company, which made the pedestal, uses a small adapter, which works with their ink bottles. However, you don't have to buy their ink. You can use a needle to suck up the ink into a syringe and then put the adapter on top of the syringe. We don't sell pedestals at the BCH because I think our customers can flip the cartridge over.

I already covered it here in case someone wants to build their own. The inside of a pedestal is straightforward. There's a U-shaped tube that connects the ink injection points to the cartridge. Therefore, we put a yellow cartridge on the pedestal, and then we fill the syringe with the ink. After that, we put the adapter on top of the syringe, and we add ink until the ink comes out.

Our final method is a cheaper version of a pedestal refill. BCH sells storage clips for those twin-chamber cartridges. You can find them under the Accessories and the Protective Clip. Each clip has a silicone pad on the bottom to prevent the ink from leaking. It will be helpful to store cartridges or hold the cartridge doing refills. We enlarged the bottom hole with a utility knife. Then we cut off a hole in the silicon pad. Cutting a hole is not easy. Some people suggest using a cigarette lighter to heat a paper clip and burn the hole. After a hole is made, you'll mark the syringe, make sure the syringe doesn't go too deep into the other hole.

It will poke the cartridge. Finally, we fill the syringe with the ink and then inject ink into the cartridge.