on saleTWSBI Vac Mini Fountain Pen - Clear

Fast delivery, just 5 days with standard mail. The box hides a wrench, silicone grease, and two O rings. The pen is small, but the cap screws on to post and the subsequent fit is very comfortable. I had to buy it as soon as I saw how cool the vacuum system is. Had it about a month and so far no leaks, no cracks. The EF nib was scratchy moving right to left, 7 to 11 o'clock, but 30 seconds with micro mesh and mylar and it is as smooth as any. It even writes nicely in reverse.

Terrific pen all around for a couple of months. Traveled with it, too, without mishaps on flights. I tend to pamper my writing supplies, especially the fountain pens, so it surprised me to find micro fissures at the threads of the grip section and barrel. Ink was slowly leaking onto my fingers as I wrote which is how I discovered the cracks. Disappointing because this Vac Mini was quickly becoming my favorite all around EDC. Hoping my Mini Classic has greater longevity.

I picked this up as my first Vacuum filler in part because I was so happy with my Mini and thought - why not get another great pocket pen? It's everything I expected. The mechanism works flawlessly, and the nib is good. It writes wet and smooth, and I like the idea that I can "turn the ink off" on this pen to make it a little safer to travel with. Couldn't be happier.

This pen is easy fill using the Twsbi vac bottle. The pen writes smooth and has a Hugh ink capacity. And it is a joy to behold.

Like other TWSBIs, the nib writes well. I ordered a medium and a spare fine nib. The medium is very wet; the fine is more suitable for everyday writing. The advantage of a vacuum fill for a pocket pen is that it seals off when the blind cap is closed, so it will be difficult to leak if jostled around during the day. My only nit to pick is that there are three possible ways to thread the cap to post. Only one of those ways results in the clip being out of the way. And of course you have a 2/3 chance of getting it wrong on the first try. You really need to post to make it usable, so this is a minor inconvenience. Otherwise, this is a very nice leakproof writer with an enormous ink capacity for such a small pen.