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Progressive Detail Moon Lamp
Over exposure leads to light bleeding into the surrounding areas and causes features to be lost. It's best to determine the optimal exposure time for your printer + resin. There are several good YouTube videos that explain how to calibrate exposure time. Look for the "Validation Matrix" print test.
DIY Ball Launcher (Updated Version)
Catapult on the microcontroller
Looks to me like you hot glue it to connect the fingers to the arm tube.
Solo Cup Speakers
DIY functional Sonic Screwdriver
Pocket Sized Robot Arm MeArm V0.4
Electric Vacuum Pen From Aquarium Air Pump.
Converting an Inkjet Printer to Print PCBs