Get New Filaments Every Month!
See our Newest Filaments! Subscribe by May 31st for June's Endless PLA shipment!
Rock on at RMMRF this May!
30% off items in SALE collection with the discount code PROTOPASTAROCKS
See what's in our Sale Collection Join us at RMRRF
Print with confidence!
Highly compatible, Protopasta prints & cardboard spools work! Not sure how?
Learn More in our Blog
Do you print with recycled filament?
3 Recycled PLA colors added. Other Recycled PLAs, PETGs, & Carbon Fibers available too.
Get Recycled Filament
Patina or Polish
Our powdered metal composites make real metal finishes possible.
Shop Metal Filament
Enjoy the variety
Every multicolor spool is unique (23 now available)
Shop Multicolor Filament
Beauty & Brawn
Beautiful, rigid Carbon Fiber now available in PETG, HTPLA, PLA, and Recycled PLA.
Shop Carbon Fiber

community inspired

Specialty Colors
Our most unique, collaborative, & sought after creations
Shop Community Inspired Filament

Made in the USA + Highly Compatible

HTPLA & PLA are formulated for reliability + high speed. HTPLA prints like PLA. AMS compatible, add edge guards & spool weights as needed or use as a refill. Thanks for choosing Protopasta! Questions? Email support@protoplant.com

OUR MOST POPULAR PRODUCTS

Endless PLA Filament Color Subscription Endless PLA Filament Color Subscription
Sale
Endless PLA Filament Color Subscription
$14.99 USD for Contemporary / 50g Coils
$14.99 USD for Contemporary / 50g Coils $25.00 USD
Iron-filled Metal Composite PLA 3D Print Iron-filled Metal Composite PLA 3D Print
Iron-filled Metal Composite PLA
$9.00 USD for 1.75mm / 100g Coil
$9.00 USD for 1.75mm / 100g Coil
Electrically Conductive Composite PLA 3d print Electrically Conductive Composite PLA filament
Electrically Conductive Composite PLA
$7.00 USD for 1.75mm / 50g Coil
$7.00 USD for 1.75mm / 50g Coil
Steel-filled Metal Composite PLA 3d print Steel-filled Metal Composite PLA polished 3d print
Steel-filled Metal Composite PLA
$12.00 USD for 1.75mm / 100g Coil
$12.00 USD for 1.75mm / 100g Coil
Black Carbon Fiber Composite HTPLA 3D Print Black Carbon Fiber Composite HTPLA Filament Spool
Sale
Black Carbon Fiber Composite HTPLA
$6.00 USD for 1.75mm / 50g Coil
$6.00 USD for 1.75mm / 50g Coil
Copper HTPLA 3d print Copper HTPLA polished 3d print
Copper-filled Metal Composite HTPLA
$12.00 USD for 1.75mm / 100g Coil
$12.00 USD for 1.75mm / 100g Coil
Joel's Highfive Blue HTPLA Filament 3D Print Joel's Highfive Blue HTPLA Filament Spool
Joel's Highfive Blue HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Iridescent Ice Clear Translucent HTPLA 3D Print Iridescent Ice Clear Translucent HTPLA Filament Spool
Iridescent Ice Clear Translucent HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
The Original Nebula Multicolor HTPLA The Original Nebula Multicolor HTPLA
The Original Nebula Multicolor HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Carbon Fiber PLA 3d print Carbon Fiber PLA filament
Sale
The Original Carbon Fiber Composite PLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Galactic Empire Metallic Purple HTPLA Galactic Empire Metallic Purple HTPLA
Galactic Empire Metallic Purple HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Candy Apple Metallic Red HTPLA 3D Print Candy Apple Metallic Red HTPLA Filament Spool
Candy Apple Metallic Red HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil $0.00 USD
Amie's "Blood of My Enemies" Translucent Red HTPLA Amie's "Blood of My Enemies" Translucent Red HTPLA
Amie's "Blood of My Enemies" Translucent Red HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Matte Fiber HTPLA - Black 3D Print Matte Fiber HTPLA - Black Filament Spool
Sale
Matte Fiber HTPLA - Black
$6.00 USD for 1.75mm / 50g Coil
$6.00 USD for 1.75mm / 50g Coil
Empire Strikes Black HTPLA 3d print Empire Strikes Black HTPLA filament
Empire Strikes Black HTPLA with Silver Glitter
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Brass-Filled Metal Composite HTPLA 3d print Brass-Filled Metal Composite HTPLA polished 3d print
Brass-filled Metal Composite HTPLA
$12.00 USD for 1.75mm / 100g Coil
$12.00 USD for 1.75mm / 100g Coil $0.00 USD

OUR LATEST STORIES

Endless PLA #37 (June 2025) - Custom made, inspired design

Endless PLA #37 (June 2025) - Custom made, inspired design

We recently traveled to Rocky Mountain RepRap Festival (RMRRF), and while the focus of a 3D printing festival like this is...

Endless Exploration EX8 (May 2025) Bone or stone?

Endless Exploration EX8 (May 2025) Bone or stone?

This month we explored Calcium Carbonate (CaCO3). CaCO3 is interesting as both an aesthetic and functional additive. We've used it...

Endless PLA #36 (April 2025) - Spring is here!

Endless PLA #36 (April 2025) - Spring is here!

For April's contents, we took inspiration from the season. We thought more marble + smoothie colors (defined by their black...

OUR NEWEST PRODUCTS

Endless PLA Filament Color Subscription Endless PLA Filament Color Subscription
Sale
Endless PLA Filament Color Subscription
$14.99 USD for Contemporary / 50g Coils
$14.99 USD for Contemporary / 50g Coils $25.00 USD
Blueberry Smoothie HTPLA Blueberry Smoothie HTPLA
Blueberry Smoothie HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Super Green Smoothie HTPLA Super Green Smoothie HTPLA
Super Green Smoothie HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Stone Gray Marble HTPLA Stone Gray Marble HTPLA
Stone Gray Marble HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Endless Exploration Filament Subscription *new in 2024* Endless Exploration Filament Subscription *new in 2024*
Endless Exploration Filament Subscription *new in 2024*
$24.99 USD for 1.75mm / Coils
$24.99 USD for 1.75mm / Coils
Carbon Fiber Polyketone Carbon Fiber Polyketone
Carbon Fiber Polyketone
$44.99 USD for 1.75mm / 500g Spool
$44.99 USD for 1.75mm / 500g Spool
Glass Fiber Polyketone Glass Fiber Polyketone
Glass Fiber Polyketone
$44.99 USD for 1.75mm / 500g Spool
$44.99 USD for 1.75mm / 500g Spool
Blue Ice Translucent HTPLA Blue Ice Translucent HTPLA
Blue Ice Translucent HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil

SEE WHAT'S ON SALE

30% off items in SALE collection with the code PROTOPASTAROCKS

Matte Fiber HTPLA - Black 3D Print Matte Fiber HTPLA - Black Filament Spool
Sale
Matte Fiber HTPLA - Black
$6.00 USD for 1.75mm / 50g Coil
$6.00 USD for 1.75mm / 50g Coil
Matte Fiber HTPLA - White 3D Print Matte Fiber HTPLA - White
Sale
Matte Fiber HTPLA - White
$6.00 USD for 1.75mm / 50g Coil
$6.00 USD for 1.75mm / 50g Coil
White Opaque HTPLA 3D Print White Opaque HTPLA 3D Print
Sale
White Opaque HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Matte Fiber HTPLA - Gray 3D Print Matte Fiber HTPLA - Gray Filament Spool
Matte Fiber HTPLA - Gray
$6.00 USD for 1.75mm / 50g Coil
$6.00 USD for 1.75mm / 50g Coil
White Marble HTPLA White Marble HTPLA
White Marble HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Matte Fiber HTPLA - Walnut Wood Matte Fiber HTPLA - Walnut Wood
Matte Fiber HTPLA - Walnut Wood
$6.00 USD for 1.75mm / 50g Coil
$6.00 USD for 1.75mm / 50g Coil
Red Opaque HTPLA 3D Print Red Opaque HTPLA Filament Spool
Sale
Red Opaque HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Blue Opaque HTPLA 3D Print Blue Opaque HTPLA Filament Spool
Sale
Blue Opaque HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil