These were made to mount Linear Actuators in my Laser Engraver Cabinet to assist in the opening and closing as the Cabinet is somewhat large. I printed them with Carbon Fiber PETG and 100% infill for added strength. They are very strong and work extremely well and can be scaled up or down slightly to accommodate various Linear Actuators. I drilled through the Cabinet and used Threaded Heat Set Inserts in the Brackets (M6 Flat Hex Head with M6 Insert). The Brackets should work in any configuration, using just the larger Brackets or just the smaller Brackets or a mix depending on your situation or setup. My apologies for poor photos, but you get the idea. This Model can also be found at https://www.thingiverse.com/thing:6747338