New Filaments Every Month!
See our Newest Filaments! Subscribe by July 31st for August's Endless PLA shipment!
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30% off items in SALE collection with the discount code HELLOSUMMER
See what's in our Sale Collection
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.
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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
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
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

OUR LATEST STORIES

Endless Exploration EX9 (July 2025) USA-made Glass Fiber HTPLA

Endless Exploration EX9 (July 2025) USA-made Glass Fiber HTPLA

A brief history of HTPLA Protopasta kickstarted High Temp PLA (HT-PLA) in 2013. Heat-treatable High Temperature PLA was a new...

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...

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
International Orange Opaque HTPLA International Orange Opaque HTPLA
International Orange Opaque HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Sun Gold Metallic Yellow HTPLA Sun Gold Metallic Yellow HTPLA
Sun Gold Metallic Yellow HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Lapis Lazuli Glitter HTPLA Lapis Lazuli Glitter HTPLA
Lapis Lazuli Glitter 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
Granite Gray c-Matte PLA Granite Gray c-Matte PLA
Granite Gray c-Matte PLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Terracotta c-Matte PLA Terracotta c-Matte PLA
Terracotta c-Matte PLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Brick Red c-Matte PLA Brick Red c-Matte PLA
Brick Red c-Matte PLA
$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 HELLOSUMMER

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
Summertime Green HTPLA Summertime Green HTPLA
Summertime Green HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Glitter's Mane Teal HTPLA Glitter's Mane Teal HTPLA
Glitter's Mane Teal HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Watermelon Crush Red HTPLA Watermelon Crush Red HTPLA
Watermelon Crush Red HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Atikam Teal HTPLA Atikam Teal HTPLA
Atikam Teal HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Amethyst Aria Multicolor HTPLA Amethyst Aria Multicolor HTPLA
Amethyst Aria Multicolor HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Nebula Rainbow Multicolor HTPLA Nebula Rainbow Multicolor HTPLA
Nebula Rainbow Multicolor HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil
Red Hot Cinnamon HTPLA Red Hot Cinnamon HTPLA
Red Hot Cinnamon HTPLA
$5.00 USD for 1.75mm / 50g Coil
$5.00 USD for 1.75mm / 50g Coil