Aeolia A1 CusX750

Piston-filling Conversion, (March 2024)

This is a kit that converts Jinhao X750 to a piston-filling pen. It enables users to change the ink saturation in feed easily, especially when paired with Zebra-G flex-nib conversion.

Everything starts here...

Aeolia A1 CusX750

Aeolia A2 CusM63

Rollerball, (March 2024)

This is a rollerball pen with unibody design and optimizes for tripod grip. It uses Lamy M63 rollerball refill. The entire pen barrel is solid one-piece, hence unibody, without any separations. However, the friction-fitted pen tip retaining the refill often pops out under high writing pressure. This problem has been fixed in Aeolia A10.

Aeolia A2 CusM63

Aeolia A2 CusM63 Unibody Pen Barrel

Aeolia A3 CusVanishing

The Gold-Nib Fountain Pen, (April 2024)

This is a fountain pen has the same classic silhouette as other Aeolia pens. It is based on the Pilot Vanishing Point inner pen, which has gold-nib option under $100 (at least in 2024). It has a gap-free smooth barrel with tripod grip indents.

Aeolia A3 CusVanishing

Aeolia A3 CusVanishing No Cap

Aeolia A3 CusVanishing

Aeolia A3 CusVanishing Disassembled

Aeolia A4 CusVanishing-Quill

Fountain Pen with QUILL, (April 2024)

This is the desktop pen add-on to Aeolia A3, which replace the end-cap with a quill attachment. The quill is shaped for right-handed people, but it is easy to 3d-print a mirrored version for left-handed users.

Aeolia A4 CusVanishing-Quill

The Quill Attachment

Aeolia A5 CusStyleFit

Mechanical Pencil, (May 2024)

This is a grip-advance, long-nosed mechanical pencil that uses Mitsubishi Pencil's Uni-Stylefit core. The lead is advanced by pressing up the grip section, so users can maintain their gripping posture. The grip section can be removed to reveal the long and thin barrel that is ideal for precision marking. This is often used in carpentry and other manufacturing work.

Aeolia A5 CusStyleFit

Aeolia A5 CusStyleFit WireFrame

Aeolia A5 CusStyleFit Showing Long-nosed Function

Aeolia A5 CusStyleFit Disassembled

Aeolia A6 CusSF-Duo

Double-Nib Mechanical Pencil, (May 2024)

This is double-nib mechanical pencil, design for engineers who need to use multiple colored pencil. The user can swap to other nib by rotating the pen, (or use two nib simultaneously). The two pencils can advance lead separately. The regular version has same footprint as Aeolia A3 and the compact version is 20% shorter than regular pens.

Aeolia A6 CusSF-Duo. (L) Compact; (R) Regular

Aeolia A6 CusSF-Duo, No Cap

Aeolia A6 CusSF-Duo Disassembled

Aeolia A6 CusSF-Duo Uncapped

Aeolia A7 CusVP

Retractable Fountain Pen, (June 2024)

One of my BEST creation

It is based on the Pilot Vanishing Point inner pen. It is retractable and a sliding cover that seal the pen when retracted. The design process of the pen body, unlike other pens, is similar to sculpture, where all the facets are subtracted away and all the beautiful lines remained. It is my best design so far, but too complicated for anyone without extensive knowledge about this pen to use.

Aeolia A7 CusVP

Aeolia A7 CusVP Mechanism Highlights

Aeolia A7 CusVP Nib Extended

Aeolia A7 CusVP Disassembled

Aeolia A7 CusVP Fully Disassembled

Aeolia A8 CusCP1

Fountain Pen, (June 2024)

This pen is created because I need to install and test my custom Lamy-style nibs on some cheap pens. I got several cheap knockoff Lamy CP1 and designed new pen body for them. The shape is identical to Aeolia A2.

Aeolia A8 CusCP1

Aeolia A8 CusCP1 No Cap

Aeolia A9 CusSport

Necklace Fountain Pen, (July 2024)

This is a compact fountain pen with extending pen barrel which is also doubled as a mechanical lock. The user has to extend the barrel and rotate the pen 90 degree to uncap it. The lanyard hole is design for necklaces. This pen used Kaweco Sport nib unit and take international standard ink cartridge.

Aeolia A9 CusSport

Aeolia A9 CusSport Extended Configuration

Aeolia A10 CusM63R

Gift Box, (August 2024)

This is a remake of Aeolia A2 CusM63 + A4 VP-Quill and is designed as a gift box. There is a box with 3 different grips, a regular pen barrel and a quill barrel. The quill is redesigned to make it lighter and stronger.

Aeolia A10 CusM63R

Aeolia A10 CusM63R-Quill

Aeolia A10 CusM63R with 3 Grip Selections

Aeolia A10 CusM63R Gift Box

Aeolia A10 CusM63R Gift Box Content

Aeolia A11 Duo

Double-Nib Fountain Pen, (May 2025)

This is a double-nib fountain pen with independent ink path, i.e., different nibs and ink color. Everything except nib and ink cartridge is FDM 3d-printed. The waterproof sealant (Ditchtol am Hydro) coats the entire pen barrel. The pen body is pretty thick and not easy to grip. It takes two international ink cartridges and is compatible with Lamy-style nibs.

Aeolia A11 Duo

Aeolia A11 Duo, Double-Nib Mechanism

Aeolia A12 Janus

Double-Nib Fountain Pen, (June 2025)

This is a double-nib fountain pen with independent ink path identical to Aeolia A11. However, everything is redesigned to fit in Aeolia A3 style body, and shaped like a regular fountain pen. The ink well is now integral part of the body. Surprisingly, this complicated fountain pen only has 3 different parts (4 total parts).

Aeolia A12 Janus

Aeolia A12 Janus, Double Feeds

Aeolia A13 CusPencil

Apple Pencil Peel (haha), (September 2025)

This is an ergonomic shell for Apple Pencil 2 Gen. This shell has a classic tripod grip and feels the same as Aeolia A10 (or similar to Lamy Al-Star grip section). The shell mechanically screwed together and not friction-fitted, so it is easy to take the Pencil out to charge. There are two style: traditional Aeolia-A2-like and skeletonized version.

Aeolia A13 CusPencil, Traditional

Aeolia A13 CusPencil, Skeletonized

Aeolia A14 Jumbo

A Meme, (January 2026)

Technically, this pen is "functional". It can receive white-board marker nib unit or Parker rollerball refill nib unit. This is designed as the end-caps for 3d-printed poster tube. Yep, this is a big pen with big clip and a small (lol) white-board eraser on the other side.

Aeolia A14 Jumbo

Aeolia A14 Jumbo, Rollberball Nib Unit