I needed a second base for my older Source hydration magnet clip, so I could easily switch between backpacks. Apparently sometime in the last 10 years these were redesigned and the new ones have a circular “mating” action in addition to the magnet. Discontented with the notion of moving the base from one pack to another, I decided to solve my problem differently.
While I was at it, my partner spied on my activities and remarked that she didn't have any magnetic attachment for her hydration pouch at all, so I designed a clip to go with it.
Design parameters:
- Tube clip is sized for a 9.5 mm tube
- There are two versions of the clip and the base, with an embedded magnet (weaker), and an external one (stronger).
- Base has cutouts for 1" webbing and will attach to standard backpack straps or a PALS grid (one hook on each of two adjacent sections)
- Both are designed for 9.6x1mm square magnets
Printing notes:
- Print all files as oriented in the .stl (especially the clip, for maximum strength). The base has the word “BACK” printed on the top side so you remember which side is closer to the magnet.
- Double check the polarity of the magnets before inserting them. I find it useful to put a small dot (with a Sharpie) on the side facing into the model (since otherwise it might be visible once printed).
- You probably don't need any superglue on the embedded magnets, since the allowances are fairly small. I didn't find they moved at all.
- For the external magnets, it's a very tight fit (you may need a clamp or pliers to insert it). A bit of super glue and it probably won't ever budge.
- The gcode file has a custom pause algorithm. Upon resume it will extrude a bit and begin a 4 second move to give you time to wipe excess material.
Child safety notes:
- The clip (both versions) is a choking hazard for children under 3
- Magnets are dangerous for children
- Supervise your children at all times
- This is not a toy
If you need a clip with a different diameter, I can adjust my model fairly easily; just message me.
Adam
