MMU3/UltiMulti Revised Leg for PDU

Credit where its due

I find the UltiMulti version of MMU3 to be a welcome upgrade on the MMU2/MMU3 basic design by prusa.  Its a credit to @David_84304 huge amount of effort to design this, and I am thankful he made it available.

Alternatives to this model:

I raised this matter with the original author, who intimated that there is another approach, which is to bend the pins of the PDU Board at 90 degrees, making the PDU board parallel with the MMU controller board.  There is a little slot found on the right leg (nearest the PDU) to hold the PDU board in position.
I'm not particularly comfortable with bending the pins, which are surface mounted onto the Controller Board, as I think it can potentially cause longer term issues, such as cracking of the solder joints.  But everyone has a different view, these modified legs give folks an alternative option.

WHY this remix?

When PDU Board from Prusa upgrade kit was installed onto UltiMulti upgraded MMU (and using the MMU Electronics board beneath the MMU), the PDU board extended below the legs, and interfered with movement of the extruder L-R - specifically the Extruder wiring loom.

What Changes?
Adjustments were made to the design of the two legs, to retain the UltiMulti mounting of MMU Electronics board below the MMU feature, which I like, and also remove the interference issue.  Also, I did not want to throw away the improvement in Idler Cover visibility by reverting to the overhead installation of electronics board.

File naming: 
I retained the original file names from UltiMulti for back-reference, with “V2” added.

Printing Guidance

I suggest to print the new legs and original BUZA Ultimulti PDU Retainer by @David_84304 using Prusament PCBlend-CF or similar strong, dimensionally accurate material.  This is because the legs attaching to Printer frame carry high stress when MMU is installed and removed from the printer, and ongoing to support the MMU in operation.
The Prusament PC Blend-CF material also looks great.
I included also the ADDON RETAINR.stl file ( original BUZA Ultimulti PDU Retainer by @David_84304) from original UltiMulti as a convenience.

The plater file is included with this remix, and it applies the following:

• Mk4 printer
• “0.15 Speed” profile
• Standard profile for the Prusament PCBlend Cf filament,  (I already tuned extrusion multiplier to suit my printer)
• 15% infill,
• 2 perimeters.

NOTE: You can go higher on perimeters and infill if found necessary.

• 0.4mm  ObsXidian (steel) nozzle.  
• Addon Clip modifiers: a 3mm outer brim modifier with 0.2mm separation gap.
  They  needed  to be added for stability whilst printing (PS nagged me about it).
• Overall printing time circa 91 minutes, using 29 grams of material.

Installation Guidance:

During installation of the new legs, I suggest you to pay attention to other things that may interfere with extruder movement, mainly the cable ties on the extruder wiring loom.  In my case they needed to be trimmed so as not to strike:

• printer frame-left  
• MMU legs L&R 
• PDU Board 
• printer frame-right.