This is a beefier fan bracket for the MakerGear M2. It mounts to the 40 mm extruder cooling fan and supports the 50 mm bed fan. It has a nice wire "shelf" for mounting two strips of LEDs.
The LEDs are from Radio Shack and come in a spool. I bought a couple spools to be used for other purposes, and I used the LEDs from the packaging -- not the spool -- a strip of three with wires already neatly terminated! Two of these strips are wired in series to give 24 volt supply -- then wired in parallel with the extruder cooling fan. LEDs are mounted to the bracket using Scotch double-face adhesive foam mounting tape.
The LEDs make it much easier to see problems with the first few layers of the print so you can stop and reset while wasting less filament.
Also, I used a 40 degree angle for the 50 mm fan, not 45 degrees. This holds the lower end up a bit to ensure it doesn't hit the binder clips holding the glass on the bed.
Printed in MakerGear black PLA (to match my black M2), using Simplify3D. Designed in OpenSCAD (file attached). Just import the STL, drop on the "bed" and print. The flat surface for the 40 mm fan is on the bottom, and it prints great without supports.
See the photos for how the LEDs are mounted and wired.
IMPORTANT NOTE TO M2 OWNERS CONSIDERING USING THIS PART WITH LEDs! I have upgraded my M2 (made in 4/2013) from 19V / 12V to 24-volt operation. HOWEVER, I am using ALL 24-volt fans, including the 40 mm fans for the electronics enclosure and extruder. My fans are wired in PARALLEL. Most M2s running on 24 volts have two 12-volt 40 mm fans wired in series! Be careful before wiring this up as shown -- I wouldn't want you to toast any fans! You might consider adding a pair of wires to the bundle coming up to the extruder just for powering the LEDs, and connecting the bottom end to an unused heat output or other MOSFET output, or simply going directly to the 24-volt power connector on the back of the RAMBo. As with all things electrical, be careful and think about what you are doing!