Gigabot X's pellet extruder can print with a variety of recycled regrind feedstocks. However, contaminants in the feedstock can cause a variety of issues when printing, including:
- Inconsistent extrusion
- Clogged or partially clogged nozzles
- Material degradation
- Weaker prints
Preventing and Mitigating Contamination
Methods to prevent contamination include:
- If the contamination is from a previously printed material:
- Use a purge material between material changes to prevent contamination from a previously extruded material. For more information, refer to Purge Materials.
- Clean the feed system with compressed air between material changes
- If the contamination is from material degradation:
- Use a purge material periodically if extruding a material prone to degradation
- Minimize print temperatures to reduce degradation
- Some materials, like PET, undergo hydrolysis at high temperatures. To prevent this, dehydrate the material before printing.
- If the contaminants are in the feedstock:
- Reassess the feedstock production process to minimize contamination
- Store the feedstock in closed containers
- If contaminant particles are small and cannot be easily removed, try printing with a larger nozzle size.