Tolerances in microfluidic master molds: a comparison of 3D printing and micromilling

Key Points

• This work aims to compare the fabrication tolerances of microfluidic master molds created by 3D printing and micromilling.
• Characterized microfluidic molds using profilometry for surface measurement.
• Conducted low-flow splitting tests to evaluate fluid dynamics.
• Performed gelatin microsphere assays to assess mold functionality.
• 3D printing and micromilling exhibited distinct differences in fabrication tolerances.
• Profilometry revealed greater precision in micromilling compared to 3D printing.
• Gelatin assays indicated varying fluid flow characteristics based on the fabrication method used.

Abstract