Endless Exploration EX6 (January 2025) Anodized Aluminum?

No, we didn't make aluminum filament, but anodized aluminum was our inspiration to explore adding color to Stainless Steel PLA for January's Endless Exploration shipment.

Protopasta Steel PLA is made with 60% stainless steel powder for a metal-like density (~2.3 g/cc vs. 2.7 g/cc for aluminum) and a cast metal look when printed (like below).

We made Gold, Burgundy, and Blue Steel PLA with uncolored (gray) steel in the background for reference. Stainless steel is unique compared to our other metal filaments in that it can be polished and resists corrosion.

Learn more about how to finish Metal PLA in a previous blog.

Below is an example of each icosa with a 6000 grit polished face. Additional considerations when printing with metal at the end of this blog.

Adding color adds new possibilities for weighted, decorative items that can be easily printed and cherished for years to come. Will you craft beautiful jewelry, costumes, props, or figurines? How about something more industrial?

Made with 400-series stainless steel, goodbye nickel and hello magnetism. Maybe you'll find the added ferromagnetic properties useful? Could these new steel colors be an Iron PLA alternative with little to no corrosion?

We can't wait to see what you make! Show us on social (links below).

Not an Endless Exploration Subscriber? Subscribe by February 28th for our next delivery in March and/or purchase Steel colors individually in February.

Take care and enjoy the pasta,

Alex and the Protopasta Team

Additional considerations: Like our other metals, steel filament has a hard, gritty surface. Expect more drag on and wear of soft inline components, like tubing. You can install more wear resistant tubing, but also be aware that bend radius and opening size of tubing can affect feeding, especially with stiff composite filaments. Choose wear resistant nozzles for less maintenance.