This is for ease of access & stowage of a water bladder hose.
This clip is designed to attach to webbing of either 11 mm width or 25 mm (1 inch).
In my case, I fit it to the webbing present on my Osprey backpack's shoulder straps, which is 11 mm in width.
I lost the original one because it was meant for 19 mm or 25 mm straps, & therefore was too loose & fell off.
I designed it to be similar to an existing non-magnetic hydration hose clip I already have. Here is the same one on Amazon. You can find these on eBay for much cheaper too.
The Inventor file can be trivially modified for any strap width.
I bought these magnets. They are 10 mm diameter by 1 mm thickness. Non-affiliate link.
2024-04-20: rev 6
Solidworks 2020 model now
upgraded to way more powerful magnets
7.92 OD x 3.19 mm height, qty 2
cleaned up CAD file
includes both the part that mounts to the backpack straps & the part that clips onto the hydration hose (designed for 3/8" OD)
not yet printed
2024-04-25 update
had to bore the central cavity to 16 mm to achieve easy fit of 2 printed parts together
hose mounted piece printed on a Form 3 in Durable resin
a little loose of a fit
backpack mounted piece printed on an UM S3 in HIPS filament
HIPS seems to be fairly dimensionally inaccurate
2024-05-19 update
hose mounted piece has too loose of a fit around the hose
magnets are very strong & very nice, but now the hose simply detaches from hose mounted piece
magnet embedded in hose mounted piece came out because press fit wasn't good enough
I did not glue this in place, but I'll consider doing it next time when I uprev the hose mounted piece