Yes, they should be. I think there was a YouTube video about how they are compatible. Off the top of my head, I think the YouTuber was Inkquiring Minds? I can’t access YouTube where I am right now.

It looks interesting. I just might!

It’s a clone made by a Chinese company. But people seem to love them! I’m considering trying one myself, though I already have a few vanishing points.

I have an ECO I have carried for 5 years in my work bag, and it works just fine. It has never cracked or leaked. I have also never tried to disassemble it, just cleaned it by rinsing. several people have noted that the threads in the barrel have to be carefully realigned when you are piecing it all back together.

I also have the VAC700R and the Vac Mini, and have flown with them. I haven’t had any cracking issues, though I have owned both for less than a year. Again, I don’t take my pens apart, though they do get banged around in my bag all the time.

I have read about these cracking issues, too, so I don’t know if I’m just lucky, or if there is a bias because so many people have TWSBI pens so the failure rate might be low, yet still have more issues crop up than less popular pens.

Also, all of my pens state they are made in Taiwan, which I have heard means they tend to be of higher quality. But that’s just something I read on a forum.

I love the ink capacity, and I don’t usually unscrew to top unless I am writing for a long time. There’s usually enough ink stored in the job to write what I need; I will release it periodically, and that seems to be enough.

Hope this helps!

Thanks for the info! I write frequently throughout the day at my job, and I refill these cartridges every other day. So I ended up getting a TWSBI VAC 700R, and I generally last the week without worrying about a midday refill when I don’t have the time.

But these pens are so fun! I may get it for non-work related stuff.

Can they hold a lot of ink? I’m curious, because I have the pilot VP, and wish it held more ink. I would definitely get an A1 if it can hold more ink!

Good to know! I just ordered a few Jinhao 82s to try out and give to my friends who don’t use fountain pens (yet), but if they are problematic with leakages in flight, two of them won’t be using them.

I believe I sit at an even 10. But two are Kon Peki, which I love. I’m working my way through them before I get more. Maybe. I’m overall pretty good about using what I have, but I will swap the inks in my pens to see how they write with different inks.

Pelikan Edelstein Moonstone ink works quite well in my Sailor PGS. I like it very much, in fact.

Your combination of colors is fantastic!