a) Using a disposable cartridge... if you elect to use a disposable cartridge, you simply remove the filler cap and insert the cartridge into the back end of the barrel, then push it in firmly to break the seal and seat it down onto the nipple on the back of the nib housing. Then slide the open end of the filler-cap down over the cartridge, and screw it tight.
b) If filling the pen Eyedropper style... (i.e. directly with ink) the ink will go into the filler-cap instead of directly into the barrel. After the filler cap is removed, you hold it upright with the open end up, then fill it with ink. Afterwards slide the barrel down over the cap and screw it securely. Just like the PFP, this pen incorporates a rubber o-ring above the filler cap threads to ensure a tight seal against the barrel without the need to use silicone grease on the threads.
c) And then there were THREE... Recently, I happened across a supplier selling a shorter version of the aluminum cladded 'squeeze' converters, so I ordered one to see if it would work in either of my pocket pens. As it turn out, one of them (the silver one) will fit perfectly in this pen if I simply add an additional 1/8" to the length. So if you would like a third inking options, I'm offer these min' squeeze converters as a upgrade option. The only caveat with them is that they must be filled before they are install into the pen. But once filled, you can install them just as you would a disposable cartridge. So if you're squeamish about filling the pen directly ED style, you can use one of these squeeze converter.
A little helper included... I've made mention both on my website and in emails to clients that a long needle syringe can be a very helpful tool to have when filling a fountain pen. I use to use them many year ago to fill the ink cartridges for my computer printer. I eventually gave that up, but I kept the syringes (they work great for small gluing applications in the workshop). Then when I got into pen making, I found them useful for filling fountain pens and would always recommended them. But now instead of just recommending them, I decided to stock some and include one with the mini pens. So if you order a Pnut, it will include a long needle 5ml volume syringe.
How to use... To use the pen once it's filled with ink, you simply grab the posting ring (the band that sits in the middle of the threads) and unscrew the inner barrel from the outer shell, flip it around and screw it back in. Once reconnected, you have a pen that's over 5 1/4" long. And if you're in a hurry or need to give a quick signature, the barrel section alone is just long enough that it can be used independently.
Ordering information... As with all of my other pens, you can custom order a pen in a variety of acrylics. If you would like help picking out something, I'd be glad to send you some links. The Pnut includes a #5 Meister nib in either a fine or medium tip and in either a 2-tone or polished steel finish, a long needle 5ml syringe as mentioned earlier, and two disposable ink cartridges so if you don't have bottle ink, you can get started using the pen right out of the box.
Upgrade option... The original Pnut is made in all acrylic, but if you'd like to add a little Bling to your pen, you can upgraded the acrylic posting band with a metal one. The tortoise acrylic pen below show a pen with that upgrade. You can choose either solid brass, chrome or 24k gold finish for the band, so you can color coordinate it with your nib.
THANKS! If you've persevered and read all the way through, I thank you for your patience, and hope you've found the information helpful. If you're excited about the pen and would like to order one or just have some additional questions, please don't hesitate to contact me. I look forward to hearing from you!