Filament guideFor most prints, weight doesn't matter. For an RC plane, a glider or a large prop worn for hours, every gram counts. PLA Aero is a PLA that foams as it prints, so parts come out much lighter. Here's how it works and when it makes sense.
Quick answer
The short answer
PLA Aero is a foaming PLA from Bambu Lab. Tiny bubbles form in the plastic as it leaves the hot nozzle, so the printed part is less dense than solid PLA. Bambu says an equal-volume print weighs about half as much as PLA Basic.
Bambu built it for RC planes, drones, gliders and aerodynamic models. It prints with a matte finish that Bambu says takes dye better than PLA Basic.
01
How does foaming filament work?
The filament contains a foaming agent. Heat in the nozzle makes it expand. The hotter the nozzle, the more it foams, so the printer pushes out less plastic to fill the same space.
Bambu prints PLA Aero at 220–260°C (428–500°F), hotter than standard PLA. In Bambu's tests, printed parts land between 0.55 and 1.05 g/cm³, or about 50–80% of solid PLA's density. The exact weight depends on temperature, speed, wall count and infill.
02
How it compares to PLA Basic
Lighter parts give up some strength. In Bambu's tests, PLA Aero is less stiff and stretches less before breaking. Its impact strength holds up well.
| Bambu's test | PLA Basic | PLA Aero |
|---|---|---|
| Printed part density | 1.24 g/cm³ (solid) | 0.55–1.05 g/cm³ |
| Tensile strength | 35 MPa | 24 MPa |
| Bending strength | 76 MPa | 45 MPa |
| Bending modulus (stiffness) | 2,750 MPa | 1,690 MPa |
| Impact strength | 26.6 kJ/m² | 28.8 kJ/m² |
| Heat deflection temperature | 57°C (135°F) | 53°C (127°F) |
For a wing or fuselage, low weight usually matters more than raw strength. For a bracket or load-bearing part, choose PLA Tough+ or PLA-CF instead.
03
What PLA Aero is good for
- RC plane wings, fuselages and tail sections
- Gliders, drones and aerodynamic test models
- Large cosplay helmets, armor and props worn for long periods
- Oversized display pieces that need to hang or mount lightly
- Models you plan to dye or finish, thanks to the matte surface
04
Limits to know
- Less stiff. Thin, unsupported spans can flex. Design in ribs or spars where needed.
- Heat. It softens a little earlier than PLA Basic, around 53°C (127°F). Don't leave it in a hot car.
- Very sensitive to moisture. Bambu calls it highly humidity-sensitive and recommends drying before every use.
- Finish is matte and slightly textured. It won't give a glossy or crisp-edged look.
- Weight varies. Foaming depends on the part, so we test settings when a target weight matters.
05
Tips for designing for PLA Aero
Bambu recommends following its separate foaming guide before printing aircraft, and so do we. Weight comes from design as much as material, so thin walls and light infill go further than solid sections. If you're designing a plane, a target weight and a center of gravity help us tune settings. If you're starting from a published RC model, send the files and its recommended settings.
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PLA Aero at IMPRESO
We print PLA Aero in-house in our Ridgewood, Queens studio. Tell us how the piece will be used, how much it needs to weigh and whether it needs to fly, and we'll recommend the right material. Every job is quoted individually.
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Send us your file, a sketch or just the idea, and how the piece will be used. We'll recommend a material and quote it.
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