Have you ever wondered about the weight of 3D printed plastic objects? The answer might surprise you, as it's not as straightforward as it seems. The weight of a 3D printed plastic part depends on several factors, including the type of plastic, the size and complexity of the print, and even the printing settings used. Let's dive into the world of 3D printing to understand how heavy 3D printed plastic can be.
Understanding the Factors that Affect Weight
Before we discuss the weight of 3D printed plastic, it's crucial to understand the factors that influence it:
- Type of Plastic: Different plastics have different densities. For instance, ABS (Acrylonitrile Butadiene Styrene) is denser than PLA (Polylactic Acid), so ABS prints will be heavier than PLA prints of the same size.
- Print Size and Complexity: Larger and more complex prints will weigh more than smaller, simpler ones.
- Printing Settings: Infill density, layer height, and shell thickness can all affect the weight of a print. Higher infill density, lower layer height, and thicker shells will result in a heavier print.
Weight of Commonly Used 3D Printing Plastics
Now, let's look at the weight of some commonly used 3D printing plastics. The weights provided are approximate and based on a density of 1.04 g/cm³ for ABS and 1.24 g/cm³ for PLA.

| Plastic | Density (g/cm³) | Weight of a 10 cm³ cube (g) |
|---|---|---|
| ABS | 1.04 | 10.4 |
| PLA | 1.24 | 12.4 |
| TPU (Thermoplastic Polyurethane) | 1.20 | 12.0 |
| Nylon (PA6) | 1.14 | 11.4 |
Real-World Examples
To give you a better idea of the weight of 3D printed plastic, here are a few examples:
- ABS print of a typical-sized chess piece (around 20 cm³) weighs approximately 21 grams.
- A PLA print of a small figurine (around 50 cm³) weighs about 62 grams.
- A TPU print of a phone case (around 100 cm³) weighs roughly 120 grams.
How to Estimate the Weight of Your 3D Print
If you're curious about the weight of a specific 3D print, you can estimate it using the following formula:
Weight = Volume × Density

To calculate the volume, you can use the formula for the shape you're printing. For a cube, it's Volume = Side³. For a cylinder, it's Volume = π × Radius² × Height.
Conclusion
The weight of 3D printed plastic varies greatly depending on the type of plastic, the size and complexity of the print, and the printing settings used. While it's not possible to provide a one-size-fits-all answer to "how heavy is 3D printed plastic?", understanding the factors that affect weight can help you estimate the weight of your prints and optimize your printing process.























