Dupont Jumper Storage - Remix / Re-design

The intent of this design is to enable the “side by side” display of a large collection of Dupont cables, while still trying to keep things as compact as possible. The print consists of a stand with ten “frames” which can pivot on the stand for accessibility; each frame can hold 28 jumpers for a total of 280. An alternate frame design doubles the number to 560 (although I found this version to be a bit unwieldy). 

Note : I have included the “complete” (one frame only) assembly as an STL file so it can be viewed using the 3D viewer.

The various parts are as follows :

• Stand sub-assembly, consisting of the following :
  • FrameTopRound
  • FrameBottomRound
  • FrameTopRound
  • StandRound
  • Dowel (a 3D printed “dowel” to connect the above parts)
• Frame sub-assembly (qty 10), consisting of the following:
  • Frame
  • Rack (qty 2)
  • Grip (qty 4)

Additional Alternate Versions 

• Large frame
  • This is similar to the “main” version, but the frame size is double width. This version takes up a lot of desk space, and requires some care to prevent it from becoming un-balanced.
• Plain Frames
  • These are large and small frames with the pivot pins removed. The idea is that these frames can be used simply to organize the jumpers, which can then be stored in a box or a drawer.
• Wall Mount
  • These allow the frames to be used on a wall mount instead of a stand. There are two sizes, intended for screw mounting.

Assembly and Use

The Stand sub-assembly is easily put together by placing the FrameTopRound piece on one end of the Dowel, and the FrameBottomRound piece on the other end (make sure this piece is oriented properly - see photos); complete the assembly by adding the StandRound piece on the bottom end of the Dowel.

Each Frame sub-assembly is made by first inserting two Grip pieces into the top slot of the frame. I recommend at first inserting each of the two Grip pieces loosely and evenly into the slot, and then press firmly on both sides to seat the Grips.

Two Rack pieces are added to the middle slot in a similar manner (make sure the “fingers” are pointing down), and then an additional to Rack pieces to the lower slot.

The Frame assembly is added to the Stand by simply inserting the two “rods” on the Frame into the holes at the top and bottom of the stand.

To add a Dupont jumper to a Frame, simply hook one connector end of the jumper between two fingers of a Rack (use the middle or bottom rack depending on the length of the wire),  and while pulling upwards pull the wire into a slot in the Grip. The slots in the Grip have a very slight taper to help clamp the wire in place (push the wire in further with a thumb-nail for a tighter grip).

Print Instructions

I printed in PETG (but PLA should work also) using the 3mf files provided, otherwise :

Frame

• 0.2mm layer height
• 3 perimeters
• no infill

Rack, Grip

• 0.2mm layer height
• 6 perimeters
• no infill

FrameTopRound, FrameBottomRound

• 0.2mm layer height
• 2 perimeters
• no infill

StandRound

• 0.2mm layer height
• 2 perimeters
• 15% rectilinear infill

Dowel

• 0.2mm layer height
• 2 perimeters
• 10% rectilinear infill

CAD

The OnShape 3D CAD files for this are here :

https://cad.onshape.com/documents/2e62a967b7f368e8cd7e37e5/w/53cce7c913a0ad3155b537db/e/e7d81972441da6764c4cf182?renderMode=0&uiState=67091af0c7450c533f66378e