 Welcome to BCH Technologies. Today we're going to make a sponge refillable cartridge for HP. For regular or starter HP cartridges, HP uses a really small sponge, and you can see here. So in this video, our goal is to remove this little sponge and replace it with a larger one, so it can hold more ink. Let's go over what you need. You need a mod kit by go to bchtechnologies.com and go to Mod Kit for HP and scroll down and you're going to find a sponge mod kit. Other things you will need are sandpaper, a heavy-duty audited knife, some rubber bands, a superglue, and a long-nose plier. For the ink, we suggest KD600X, which you go to bchtechnologies.com, go to Refill Ink, Refill Ink for HP, and on the left hand you're going to see a filter, and you click 600 mil. That's the total amount of ink, and then you scroll down and find a four-color ink, and it has three black ink and CMY. There's a lot of ink. The first thing we do is get the cartridge protected. We use a piece of tape, the sticky parts towards us, and the non-sticky parts towards the cartridge, so the cartridge printed will not get in contact with glue. Then we get a second piece of tape and place it on the top of the cartridge and press it down. Then we get a third piece of tape and put it on the electronic ribbon. The third piece is in case there's some superglue dripped down, and we don't want the superglue to get on the electronic tape. And then if you want, you can sort of bend the tape and make a little tab, so it will be easier for you to remove it. You can just pull it and remove it. Once the border is open, we'll work on the other sides. Once all the edges are loosened, the cap can be taken off and exposed to the sponging side. The next step is not very hard, but it requires lots of patience. Each cartridge has internal walls to limit the cartridge capacity, so we'll use a long plier to remove the barrier. By doing so, we'll increase the cartridge ink capacity to the XL level. So we remove the sponge first, then we use a long nose plier to break the wall down piece by piece. Do it very carefully. Do not damage the filter underneath. This is what the final result looks like, and you don't really need to remove all the walls, but just make sure when you press the sponge down, the sponge can touch the filter. Now we do the same thing for the color ones. Step one, get the cartridge protected. Step two, cutting. So for the color one, we need to get rid of those four walls. In the next step, we'll use 150 grade sandpaper to sand the top of the cartridge evenly and smoothly. We'll then use a knife to remove the high-end debris. We'll now wipe or blow out the debris from the cartridge, and then we just put the cartridge under running water and clean it. You can use regular tap water to do it. And after that, after the cartridge is clean, we can insert a sponge and press it all the way down. We don't need a glue with airtight, so we'll just put a little bit of super glue and secure the top. For the colors, one of the sponges is a little bit larger than the other two. So that larger one is going to be on the top. While now inject ink, we're going to push the needle halfway down into the sponge and then pull it out a little bit so we can release ink. Do not press it down too hard so the needle might penetrate the filter underneath. So we just keep injecting ink until we can see the color comes up. We'll do the same for the color one. Now we can take the protective tape off. And now we're going to show you how to do unclogging. If you have a printer that's working, which I mean is printing, but the printout is blank or the printout is striped. That means it's clogged, which means you have air bubble underneath. So if you have a priming clip, you can just do it like this. Put it on the clip and draw some ink from the bottom. The air bubbles will be drawn out with the ink. And I know not everybody has a priming clip. If you don't have one, let me show you an alternative. So you get a piece of paper towel and the white paper towel with some water. And then get a vacuum cleaner and suck underneath. Once unclogged, you're going to see lots of ink coming out. Now we can put in the printer for test speed. You can see the first printout is still clogged. So what we did is we used the printer's building function to clean it twice. After we clean it twice, we take it out and we use a vacuum to suck it a little bit more. And eventually we get it in working. Your refill cartridge will not show real ink level. So it will show the old ink level, like the black one, or it will show no ink level. So just ignore all the warnings about the low ink level or cartridge ink depleted. Whenever you see an air window pops up, just click OK. And it will dismiss the message and keep printing. So you're OK as long as this ink indicator light is not flashing. When it is flashing, there's something wrong with your cartridge. Maybe you broke the filter, or maybe there's something as simple as there's some ink splash on the ribbon. So you need to wipe it dry. So take the cartridge out and re-insert a couple of times. If this light is still flashing, then the cartridge is permanently damaged. Since the ink level indicator is no longer working for us, so we just need to keep an eye on the printout quality. So if I see a printout face missing a color, or we see stripes, so we know the ink run out, we just need to add more ink. Let me show you how this works in real life. So we printed more black pages. Now we use up all the black and use up all the color. So the printer thinks there's no ink in the cartridge, but I click OK when it says low ink, so I just keep printing. And we're going to put a green separator for every 50 pages printed. And I can show you how many pages can print with this refilled cartridge. And this will print more than regular HP, because we use a larger sponge than the regular sponge. Okay, now you can see the colors run out. So we went back and checked at what time the colors run out. So we print out 260 pages. So the next thing we do is we can take the cartridge out and add the ink back in and do some unclogging if necessary. Then we will be back printing.