Projector Elevation Adjustment Disks

thingiverse

Portable Projector Adjustable Foot Inserts Portable computer projectors frequently lack an adequate adjustment mechanism, leaving users scrambling for alternatives. One effective solution is a stack of precisely machined disks. These compact inserts are designed to interlock securely, preventing the ones in the middle from slipping out, and provide a recessed area at the top to accommodate the projector's existing foot. I've included three different thicknesses: 8mm, 4mm, and 2mm. Having six of the thicker disks, two each of the middle and thinnest disks creates an optimal set for adjusting projectors. Important Safety Note Absolutely do not use PLA to print these inserts. PLA can soften and degrade at temperatures above 50C (122F), which is easily reached by some portable projectors or in a closed car on a hot summer day, especially in Phoenix-like climates. Instead, choose ABS for its heat resistance. My colleagues have successfully used the inserts with various club sets, recommending the following mix: six 8mm disks, two 4mm, and two 2mm. These quantities allow for effective adjustment without adding unnecessary weight or space. I'd advise including more in each set to cover a wider range of adjustments. Design Notes I created the designs using FreeCAD 0.14, and have included the accompanying .FCStd files for anyone interested in modifying them. The disks don't interlock perfectly, resulting in a small gap, but this does not compromise their effectiveness. Printing Instructions I've printed the inserts at a fill level of 15% (the default setting in Cura), which appears to be sufficient. If you plan to use the inserts with heavier projectors, consider increasing the fill percentage for added stability.