power module mount for 6U arturia rackbrute eurorack

Hi!

I designed a simple and efficient mount, primarily designed for the Arturia rackbrute 5 hp power module, but I'm quite confident that it will be compatible with most any other 5 hp power module. I have created three (3) versions of this design that will accommodate the following mounting preference: simple velcro, 3mm hex nuts, or using a washer/nut combo 8.5mm or smaller.

The design is intended to be used inside of the Arturia Rackbrute 6U eurorack case, but maybe you're a rather curious creature filled with the need to find novel applications of fun trinkets created by other nerds. You are seen.

I was able to print this within 1 hour on a prusa mini+, at 0.25mm layer height and no supports. It's designed to print without supports. My test prints were PLA, final-ish print was PETG.

If you'd like to watch me mod my 6U Arturia case with the velcro version of this design, you're in luck. 



 

Check out my DIY walkthrough and build montage here: 

Here's the BOM I used for relocating the power module of my Arturia 6U Rackbrute:

• A 16mm latching metal push-button switch, rated for 5 amps 2) 
• A 5.5mm x 2.5mm DC Power threaded with 12V Male Plug, rated for 10 amps 
• Some spare 22 AWG wire, rated for 5 amps (15cm or 6" or so) 
• this power module mount I designed (the velcro one for heathens) 
• Two (2) 3mm hex nuts for mounting the power module to the 3d printed thingy
• Two (2) 3mm hex bolts, approx 8mm in length, same as abovesies

Tools I used throughout installing this mod into my Arturia rackbrute 6U case:

• Drill with appropriate sized drill bits. I used a step up bit
• De-burring tool
• Multimeter
• Soldering iron + solder
• Heat gun (if you're using heatshrink like me)

Expendables I used along the way:

• Lots of paper tape, some for marking, lots of covering my bus board from metal flakes
• Shop towels
• A random mystery oil for drilling into aluminum
• Alcohol for cleaning and prepping surface for velcro
• Other kinds of alcohol for drinking
• ¾" velcro roll
• Heatshrink tubing to cover my probably janky cable soldering
• Something to protect your electrical connections, short term is electrical tape, but eventually I'm going to seal everything with hot, hot glue 

If you're looking to extend the internal molex power cable:
The cable that connects the power module to the bus board uses a very specific model of molex connector. Here is the data sheet of the exact molex connector Arturia uses: 
https://www.molex.com/en-us/products/part-detail/39012060?display=pdf
https://www.molex.com/en-us/products/part-detail/39012060?display=pdf

The only alternate molex cable I could find that was compatible:
https://www.digikey.com/en/products/detail/cnc-tech/4281-2-06-D/10260029

I tried using a Cablematters brand molex connector, which is almost correct, however it was a brief and sad moment when I realized there it is in fact not compatible and that I wasted my time and money by not reviewing incredibly boring data sheets.

If you are going to print the alternate versions for mounting with embedded hexnuts or washer mounting points:

• The hexnut holes at various points are designed for a typical 3mm hexnut with a touch of tolerance thrown in. You should be able to print it up, shove it in, and get going! Love you, buddy.
   
• The washer size of 8.635mm I chose based primarily off aesthetics vs. my existing design. I give you full permission to curse at me, however you must chose novel and unexpected combinations of profanities. Bonus points if you use iambic pentameter.
   
• Lastly tell me what you think of the print and / or my dumb youtube video…. or to put it another way: Compose your thoughts in iambs, verse or line.

BE SAFE. HUGS. 

Ben