How to fix Blobs on 3D Prints - Filament Setting Issue

3D Printing Materials
1

Blobs on PLA prints are common issues caused by excess filament extrusion or poor retraction settings.

To prevent blobs on PLA prints, follow these quick tips:

  1. Optimize Retraction: Adjust retraction distance (4–6 mm for Bowden, 1–2 mm for Direct Drive) and speed (40–60 mm/s).
  2. Calibrate Extrusion: Fine-tune the extrusion multiplier to avoid over-extrusion (reduce to ~95%).
  3. Enable Coasting: Stop extrusion slightly before travel moves to reduce filament buildup.
  4. Lower Temperature: Use the lowest effective temperature (190–210°C) to minimize oozing.
  5. Increase Travel Speed: Set speeds to 150–200 mm/s to reduce filament drips during moves.
  6. Use Quality Filament: Ensure PLA is high-quality and moisture-free.
  7. Clean the Nozzle: Regularly clean or replace the nozzle to maintain smooth flow.
  8. Enable Wipe Settings: Add wiping movements to clean the nozzle during layer transitions.

Kindly check this link for full details https://all3dp.com/2/3d-print-zits-tips-tricks-to-avoid-blobs/