Solar collector

thingiverse

This is a parametric OpenSCAD design for a flat 'fresnel'-type mirror that concentrates sunlight, made from lasercut parts and flat mirrors. It's a work-in-progress uploaded early; please note: The preview doesn't work when xSize or ySize exceeds 2. Rendering works fine, but non-square matrices are rendered incorrectly. Check the comments in the code for explanations on how to use it. All resulting x- and y parts can be used to mount the mirrors. This design could likely be simplified. Don't underestimate the necessary rigidity and accuracy for an optimal focal point. The DXF files were used for the 5x5 mirror cut out of 4mm MDF shown in the photo and preview, with the focal point positioned 500 mm in front of the frame to one side. Be cautious when using larger mirrors near sunlight! Print Settings Printer: Lasersaur Post-Printing The frame was glued using wood glue. Mirrors were cut and glued with hot melt glue. To improve alignment, the thing was heated in an oven to soften the glue and then the mirrors were pressed into their sockets.