The Prusa Mk4 2026 is the latest addition to Prusa's line of 3D printers, offering advanced features and improved performance. In this review, we focus on two critical aspects: print bed adhesion and surface finish quality. These factors significantly impact the success of your prints and the quality of the final product.

Achieving excellent print bed adhesion is essential to prevent warping and ensure dimensional accuracy. The Mk4 2026 comes with a heated bed, but proper preparation is key. Here are some tips to optimize adhesion:

  • Clean the Bed Regularly: Use isopropyl alcohol to remove oils and dust before each print.
  • Use Adhesive Aids: Apply a thin layer of glue stick or specialized adhesion spray for tricky filaments.
  • Adjust Bed Temperature: Set the bed temperature according to filament type—typically 60°C for PLA, 80°C for PETG.
  • Level the Bed Properly: Ensure the bed is perfectly level to maintain uniform contact across the print surface.
  • Use the Right Surface: Consider upgrading to a textured PEI sheet or build surface for better grip.

Surface Finish Tips for the Prusa Mk4 2026

The surface finish of your 3D prints depends on several factors, including filament choice, print settings, and post-processing. Here are strategies to achieve a smooth, professional surface:

  • Optimize Layer Height: Use a smaller layer height (e.g., 0.1mm) for finer detail and smoother surfaces.
  • Adjust Print Speed: Slower speeds improve layer adhesion and surface quality.
  • Use Support Structures Wisely: Minimize support contact points and remove supports carefully to avoid surface imperfections.
  • Post-Processing: Sand the surface lightly with fine-grit sandpaper or apply a surface primer for a smoother finish.
  • Choose the Right Filament: Some filaments, like ABS or PETG, produce smoother surfaces when printed correctly.

Additional Tips for Optimal Results

Combining proper bed adhesion techniques with careful surface finishing practices will lead to high-quality prints with excellent detail and durability. Experiment with settings and materials to find the optimal combination for your specific projects.