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Hi, I just recently bought a new converter for my old Platinum PKB-2000 which is a Pocket Pen. My old converter was gone when my dad accidentaly threw it away. Anyway, this topic is just a remake from a2z's old topic. I'm just gonna make it clearer from the image, because the how to is the same as it was from a2z's old topic. You can find the original old topic from here: a2z original topic. As for the how to, I'll rephrase it with my own words: First of all, the tools needed: Cutting mat(I use Joyko CM-A3, but any cutting mat will do, as long as you have ruler if they don't have built-in ruler like what mine has, mine was bought intially for gunpla, lol), and Cutter(I used Kenko L-500, but any cutter that's not dull will do). Steps: First, you must turn the rotating stem on the converter counter-clockwise, so that the plunger go all the way to the other end of the converter. Second, if you have a cutting mat just like mine(see the picture below), you can just cut through the rotating stem leaving 0,5cm of it. And voila! You have a converter that fit into your Platinum Pocket Pen. Note: You can only fill the ink until the plunger rod hit the same length as the rotating stem, but it's still waaaaay better than using a cartridge, isn't it? Here's the picture to help you imagine and decide the cutting line to the rotating stem. I hope it helps whoever needed this guide. Cheers! ' Link for videos on the process: video on YouTube.

I thought it would be interesting and potentially helpful to share this since I searched for converters that fit this pen but I couldn't find any. Result-wise, this is what it looks like and it works but with a little caveat, which I'll get to in a moment. Here are the steps: I started off by drilling a hole near the base of the piston stem. Then I cut off the top of the stem with a box cutter. Next, I threaded a bundle of string through and tried to push down the piston. However, the collar fits snuggly around the stem so the strings got stuck. So does the piston. To solve that, I polished the inside of the collar and the two sides of the stem with micromesh, so that the strings can fit through. Finally, it can be assembled together. I also polished the back of the stem such that it's more conical and less flat. It helps the stem to not be stuck by the collar. It does indeed draw up ink but you might have noticed a slight problem. That is you have to have a thin rod, which is a separate thing that you have to carry around, to push down the piston. It shouldn't be a problem on the desk but it's something extra you need to remember if you want to refill on the go. Length comparison: kaweco modified, international short, international long, international converter(top to bottom)

Hi everyone, It's great to be part of this fountain pen community. I rediscovered my love and passion for fountain pens recently. Coincidentally, I got my first pocket pen (Kaweco Sport, Bordeaux, medium nib) with Kaweco Caramel Brown ink cartridges and a mini piston converter today. And I must say that I am loving the experience of writing with it. It has an old world charm to it, which is accentuated by the colour, golden nib and clip, not to mention the unique design and utility. I am sure this is not my last Kaweco Sport. I may consider getting a Brass Sport later. But, I guess a Sailor Pro Gear Slim isn't very far in the future. I tend to gravitate towards retro and vintage stuff. Looking forward to some great conversations here.😊 Cheers! Ajay