I have a Sintron Reprap 3D Prusa (knock off). I need a little extra light down on the bed to whats going on under the extruder. I ordered a LED light from www.allelectronics.com Item# CAT# BLD-4 or CAT# CLD-4 $6.00 just print the 4 parts and snap it together. you can mount the main arm on the inside or the outside depending on if you need more room on your bed. You can glue the square pin into part 1 and part 2 if want or shave it tight and it sticks together just fine. I have a Sintron Reprap 3D Prusa (knock off). I need a little extra light down on the bed to whats going on under the extruder. I ordered a LED light from www.allelectronics.com Item# CAT# BLD-4 or CAT# CLD-4 $6.00 just print the 4 parts and snap it together. you can mount the main arm on the inside or the outside depending on if you need more room on your bed. You can glue the square pin into part 1 and part 2 if want or shave it tight and it sticks together just fine.