It’s great that Onefinity has provided these files. However, the best material to use is NOT acrylic, but polycarbonate. Order 1/16" (.0625" or .06") Lexan, Makrolon, or other brand. Available on Amazon or eBay. Download the files and import as vectors into Vectric VCarve (Pro, Desktop, or Aspire). Clean up the files by converting to curve using Bezier curves. Mount the polycarbonate using painters tape and CA glue; bit: O-flute spiral upcut, 1/16" profile outside. ~45 IPM, 12,000 RPM, depth of cut .04. The result is an unbreakable router shield.
