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Sigma Clicky Pen

$195.00

Introducing the Sigma Pen: Engineered for Precision, Designed for Life

Experience the perfect harmony of innovation and craftsmanship with our new Sigma Pen. More than just a writing instrument, the Sigma Pen is a testament to meticulous design and cutting-edge manufacturing, crafted for those who appreciate the finer details. The Sigma features a CNC machined 6/4 Titanium pocket clip, 3D printed mechanism, Schmidt EasyFlow 9000 refill, and our signature ruby ball as the retract button...the same instrument-grade ruby we use in our Lambda Spin Tops.

First prototype Drop: Titanium ONLY

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Material

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Product Overview

Uniting Design, CNC machining, and 3D Printing: The Sigma Pen is an integration of today's most advanced manufacturing techniques. We utilize the precision of CNC (Computer Numerical Control) machining to produce the pen's body and 6/4 titanium pocket clip. This process ensures high strength, tight tolerances, and consistent component fit, contributing to the pen's robust and reliable feel.

In parallel, we leverage the capabilities of 3D printing to fabricate intricate internal geometries and specialized parts. This technology enables the creation of designs not achievable with conventional manufacturing methods to optimize the pen's click mechanism. The combination of these approaches results in a writing instrument that exhibits both exceptional precision and reliability, designed to perform consistently through extended daily use.

Prometheus In the Wild

Product Details

Why Sigma? In mathematics, Sigma represents the summation of parts to form a whole. Our customers have been asking for a clicky pen for years, but I wanted to deliver something exceptional. Turns out that took a while, but we've arrived. Over two years in the making, the Sigma Pen embodies this principle—it's the sum of precision-engineered components, innovative manufacturing, and thoughtful design, all coming together to create an exceptional writing experience. It's also a Gen-Alpha nod to the pen's subtle awesomeness.

The Art of the Click

In-House 3D printed mechanism: A masterclass in modern manufacturing. Inspired by the designs of our friend Will Hodges at Tactile Turn and the Mitsubishi Boxy pen, we've refined every aspect to deliver an exceptionally smooth and consistent action. Each click is a confirmation of quality, a testament to the seamless integration of its many parts. The mechanism is entirely 3D printed in-house on our Formlabs Form3 resin printer from engineering-grade Tough 1500 material.

The Signature Touch: Ruby Ball Activation

Just like our acclaimed Lambda tops, the Sigma Pen features our signature instrument-grade ruby ball as its retract button. This novel element provides a satisfying tactile experience and connects your new pen to the heritage of our product line, and the quality you've come to expect.

Parker Compatible Refills

We prefer (and ship with your pen) the Schmidt Easyflow 9000 refill. This is the same refill we ship with our Alpha pen adapter kit. There are a lot of parker compatible refills out there, which you can use, but the Schmidt is our favorite.

Custom Pen Spring

Our USA-made spring is specifically designed for Parker refills and has just the right amount of force. No generic coil springs here.

Materials

Electroless Nickel over 6061 Aluminum, C360 Brass, C145 Tellurium Copper, 6/4 Titanium
Dimensions

Overall Length: 5.25" / Body Diameter: 0.45"

Weights

xx Oz (Electroless Nickel) / xx Oz (Titanium) / xx Oz (Brass) / xx Oz (Copper)
Compatible refills

Parker Compatible: Ships with Schmidt Easyflow 9000 (Medium/Blue)
Where it's Made

Customer Reviews