How to make PLA more flexible

PLA (Polylactic Acid) is a bioplastic that is commonly used for 3D printing material. PLA is known for its rigidity and strength. However, if you want to make it more flexible, there are a few techniques you can try:

  1. Add a plasticizer: One way to increase the flexibility of PLA is to add a plasticizer such as glycerin or triacetin. These additives can help to soften the PLA and increase its flexibility. However, be aware that adding a plasticizer may also decrease the strength and durability of the PLA.
  2. Blend with a flexible material: Another option is to blend the PLA with a more flexible material, such as TPU (Thermoplastic Polyurethane), VAE (Vinyl Acetate Ethylene powder) or TPE (Thermoplastic Elastomer). This can help to create a material that is both strong and flexible.
  3. Increase the printing temperature: Printing PLA at a higher temperature can also increase its flexibility. However, be careful not to print at too high of a temperature, as this can cause the PLA to degrade and become brittle.
  4. Modify the printing settings: Finally, you can modify your printer settings to create a more flexible print. For example, you can print with a lower infill density, use thicker walls, or print with a slower speed. These changes can help to create a more flexible final product.