 Welcome to BCH Technologies. This video is a part of video one of our Twin Chamber Review series. If you want to see the whole video, please visit the link below. 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 until the ink overflows or coming out of from the bottom. If you refuel it correctly, you can see if you put it on the table, then you'll pick it up, and there should be no ink coming out, which means the pressure is balanced. The second method is usually done by refuel stores, such as Costco. Let's take a Costco refueled cartridge as an example. Costco drills a small hole near the air hole and then add ink through this hole. After that, they will put a bandage over it. In this case, a small white sticker. The bandage doesn't need to be airtight, so a piece of scotch tape will do the job. We're now working on the cyan cartridge. We can see the air hole underneath the lighter C. We'll drill the hole between the air hole and the HP symbol. Then we'll fill it up until the ink comes out, and then we put a bandage over it. For the third method, we use a tool called a refuel pedestal. The tool can be found on eBay for about $10 a color. However, the black pedestal can fit all cartridges. So if you're on a budget, you can just buy a color pedestal. This company who made a pedestal uses a small adapter, which works with their own ink bottles. However, you don't have to buy their ink. You can just use a needle to suck up the ink into a syringe and then put the adapter on the top of the syringe. We don't sell a pedestal at the BCH because I think our customer is capable of flipping the cartridge over. However, we cover it here just because the ink is someone who wants to build their own. The inside of a pedestal is very simple. There's a U-shaped tube connecting the ink injection points to the cartridge. Therefore, we put a yellow cartridge on the pedestal and then we fill the syringe with ink. After that, we put an adapter on top of the syringe and we add ink until the ink coming out. Our final method is a cheaper version of a pedestal refuel. 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 ink from leaking. So it will be useful to store cartridges or hold the cartridge during refills. We enlarged the bottom hole with a utility knife. Then we cut off a hole in the silicone pad. Cutting a hole is not easy and some people suggest using a cigarette lighter to heat up a paper clip and burn a hole. After a hole is made, billmark the syringe and make sure the syringe doesn't go too deep into the hole. So it will poke the cartridge. Finally, we just fill the syringe with ink and inject ink into the cartridge.