I needed a light to see to re- connect wires that had come loose over time and did not like to run to get one. So I made one that mounts to my printer were I wish. The LED's are cut into groups of three this is how it is made. You can get these at Amazon for less than $8.00 for 16 and a half feet that is 300 LED's with a 3M sticky back. http://www.amazon.com/gp/product/B00WQFP3AO?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00 A great deal I had also used them to put on the bottom of the extuder mount to light up the piece being printed. Created with Design Spark Mechanical, a FREE and extremity easy to learn and use CAD http://www.rs-online.com/designspark/electronics/eng/page/mechanical Have a great day. :-)