Back-to-basics Natural PLA

4043D PLA Filament

$24.99 USD

No sparkles or fancy finishes here, just natural, unmodified Natureworks Ingeo 4043D PLA resin extruded into filament and spooled onto cardboard spools to minimize environmental impact and maximize value. Many filaments are wound onto wasteful plastic spools because it's cheap and easy, but cardboard is sturdy enough for single use, saves shipping weight, and is easily recycled when done! Proto-pasta filament is first dried, then extruded without moisture using air cooling for exceptional quality. Minimal waste, no water use, and no additives because less is more when meeting basic needs.

Technical Data Sheets

All of our products have material technical data sheets available for download here

Safety Data Sheets

All of our products have safety data sheets available for download here.


We provide a number of domestic shipping options within the United States via UPS, including free shipping on orders of $50 or more. We also provide international shipping via DHL Express.


At ProtoPlant's discretion, returns and replacements will be accepted within 90 days of purchase.  Please check the material label before opening your product.  Only sealed product can be returned. Shipping of items for exchange or refund is paid by the customer. More information about returns and replacements can be found in our terms and conditions

Quality, reliability, and value...

Print like standard PLA and enjoy standard discounts for loyalty and bulk purchases. For printing help, consider our getting started guide. For the latest news and discounts, subscribe to our email newsletter. When you purchase Proto-pasta, you can feel good about supporting small business, future innovation, the environment, and hard working folks that love 3D Printing, technology, and tinkering as much as you do!

Customer Reviews
5.0 Based on 17 Reviews
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Filter Reviews:
Christopher F.
United States United States
Good filement overall.

I bumped my printer to 220 and it feed a little easier the the nozzle, but qaulity is excellent and I get excellent prints out of it.

Charles T.
United States United States
Simple, cheap, colorless PLA

Arrived quickly and intact, overall great product so far

A ProtoPlant, makers of Proto-pasta Customer
Jesse L.
United States United States
Looks great!

Easy to print semi-transparent filament! I’ll have to print with thicker perimeters in the future, and maybe do some vases for lighting :)

ProtoPlant, makers of Proto-pasta Back-to-basics Natural PLA Review
Shawn M.
United States United States
Great PLA filament!

Prints nicely with no nozzle or extruder clogging, prints look great. Proto Pasta will become my go-to PLA filament. Wish they had gray PLA.

Mike B.
United States United States
Better than basic results

I run a product design lab, and we use a large volume of material for cosmetic and form models. This filament is among the best I've used, and my students are very happy with it. Lighting projects in natural PLA using vase mode come out beautifully.

Free Domestic Shipping

Free shipping in the lower 48 + DC for orders over $49.

International Shipping

Live outside the U.S.? We ship all over the world!

Support from the Source

Get expert, in-house support by the makers of Protopasta.