The clips comprise of a top hanger and lower angled clip that allow light to efficiently shine on the build platform just under the moving axis blocks giving the most direct light. Each clip is held together via an M3 10mm bolt and nut (I had lots left over from my UM build) or simply substitute with a 3mm wide zip-tie. The assembled clip hangs from the top of your bot and locks underneath making sure the bar is held securely all the while not marring your bots frame nor requiring your to place adhesives that will fail over time nor drilling additional holes in your body.Demo video: http://goo.gl/pc3jGJ InstructionsNab some Dioder LED bars from your local IKEA or purchase online: - White: http://www.ikea.com/us/en/catalog/products/20119418/ - Multi color: http://www.ikea.com/us/en/catalog/products/50192365/ Print 6 LEDClipA.stl Print 6 LEDClipB.stl Push 3mm nut into B part Screw M3 10mm bolt into front of B part which pulls nut into B part Un-screw M3 10mm bolt from part B Match part A and B Screw M3 10mm bolt through part A into B leaving slack Hang part A on frame Spin part B horizontal to pass frame Spin part B vertical creating a rail lock Check location of part B in relation to axis slide blocks (make sure you keep clear of the end-stop sensors) Tighten M3 10mm bolt into nut locking position Snap Dioder Bar into part B pinch arm Run your power cords down inner frame Mount Dioder inverter to bottom of bot Zip-tie leads together along with extra 4th LED bar for Ultimaker logo light up display!Enjoy your new well lit build platform!