Printrbot Metal Plus ATX power supply mounting bracket by unobtanium

Last crawled date: 3 years ago

After I upgraded my Printrbot Metal Plus to a Corsair CX430 ATX power supply I had been wanting to find a solution to mounting the power supply, I was trying to save space and any attachment to the sides was out of the question, I decided I wanted to mount it to the top and use existing Printrbot mounting locations.
I did a lot of searching for printable .stl files and everything I found was going to be a 8 hour print or longer, I wanted something that was strong and had a reasonable printing time, so I designed the part myself.
I did a search for ATX power supply dimensions and found the NEMA specifications which is the standard by which its manufactured from.
The bracket was designed in Solidworks and the top pattern is based on the NEMA dimension of 64mm wide using 6-32 SHCS, and the bottom pattern is based on the Printrbot pattern of 19mm wide using M3 SHCS, the vertical dimension between those two dimensions is based on allowing clearance for the button head machine screws that the power supply would sit on in the location I had to use.
I removed the original Printrbot M3-0.5 x 6mm long socket head cap screws and installed M3-0.5 x 10 mm long socket head cap screws through the counterbored holes on the printed bracket (narrow bolt pattern) and then on the top (wide pattern) I installed 6-32 x 3/8" SHCS.
By mounting the power supply on the top of the printer I had to extend the "6-Pin PCI-E" cable with a "6-Pin PCI-E Extension Cable" which is a heavy duty grouping of wires for 12vdc coming from the power supply the one I purchased was 45 cm or approximately 18" long, it is just the right length to hang down on the back of the printer frame and curl under the moving printing plate towards the bottom of the printer and plug into the Printrboard.