TWSBI VAC 700R in Cerulean: First Impressions & Review
Original video: TWSBI Vac700R Kyanite Unboxing and First Impressions
TWSBI VAC 700R
If you’ve been around the TWSBI brand, you know they make some of the best affordable piston-filling fountain pens out there. But this time, I got my hands on something a little different—my first vacuum filler from them, the TWSBI VAC 700R in Cerulean.
I’ve had plenty of TWSBI pens before, but never a VAC 700R, so I was really excited to check this one out. Let’s dive into the unboxing, the filling system, and my initial thoughts after inking it up!
Unboxing & What’s Included
TWSBI always does a great job with their packaging—simple, functional, and protective. Inside the box, you get:
✔️ The pen itself (in a gorgeous cerulean blue)
✔️ A wrench (for disassembly & maintenance)
✔️ Silicone grease (for smooth operation)
✔️ Extra O-rings (always a nice touch for long-term use)
This is one of the reasons I like TWSBI. They design their pens with user maintenance in mind, which is rare at this price point.
Design & Build Quality
The TWSBI VAC 700R Cerulean is a large demonstrator pen with a vacuum filling system.
Cerulean blue accents on the cap, clip, and piston collar make it stand out.
The matte clip adds a subtle touch of contrast.
The TWSBI logo on the finial is as sharp as ever.
The cap has an inner sealing mechanism to prevent ink from drying out, which is always a plus.
How the Vacuum Filling System Works
Unlike the piston fillers that TWSBI is known for, the VAC 700R uses a vacuum filling system, which works like this:
1️⃣ Pull the piston rod all the way up
2️⃣ Dip the nib into an ink bottle
3️⃣ Push the rod down—this creates a vacuum and sucks ink into the barrel
4️⃣ Lock the collar to seal the ink inside
This system allows the pen to hold a huge amount of ink, which is great if you write a lot.
Inking It Up & Writing Test
I chose Colorverse Gravity Wave, a deep blue-teal ink, to match the Cerulean color of the pen. Filling was smooth, and thanks to the vacuum system, I was able to get a full barrel of ink in just one go.
For the nib, I went with a 1.1mm stub because:
✔️ Stub nibs make handwriting look more stylish
✔️ Wide downstrokes & thin cross-strokes add character
✔️ TWSBI’s stub nibs are well-tuned & easy to use
First Writing Impressions:
🖋️ Super smooth—no scratchiness
🖋️ Nice ink flow—not overly wet, but just right
🖋️ Comfortable grip & well-balanced feel
Final Thoughts: Is It Worth It?
If you’ve been wanting to try a vacuum filler, the TWSBI VAC 700R is a fantastic choice. It has a high ink capacity, a smooth writing experience, and a solid build quality at a reasonable price.
Pros:
✔️ Large ink capacity
✔️ Smooth stub nib (great for adding style to handwriting)
✔️ Vacuum filling system is fun & efficient
✔️ Easy to maintain with included tools
Cons:
❌ Larger size might not be for everyone
❌ Not pocket-friendly (best for desk use)
Overall, I’m really impressed with the TWSBI VAC 700R in Cerulean. It’s a great pen for fountain pen lovers who want a big ink reservoir and a fun filling system without spending a fortune.
Would you try a vacuum filler? Let me know in the comments! 👇
