MendelMax Windbreak/Wall Clips

Some of my warping problems I attribute to drafts from my RAMPS fan and PSU. As a result I devised these friction clips to hold 2mm sheets of acrylic (or printed material) to prevent drafts from flowing directly over the heated print bed. I have tweaked the design so they should work fine on the vertical beams as well (holding their position), and four clips should hold a sheet of acrylic across the front or the back pretty well. Rail version (10cm single piece) works, but the insert seems to