Stethoscope AirTag Attachment

I made this originally for my significant other who's stethoscope loves to wander away from them when they float around the hospital. Their may be others like them out there, so hopefully this comes in handy for them as well!

For those that have been lead here by Google looking to purchase this as an already made item, please head to my new storefront (which was formerly Etsy)!

https://shop.owlsarcanum.com/

This is meant to fit a 3M Littmann Cardiology IV stethoscope (which has tubing that varies in outer diameter of 11-12mm depending on the location on the stethy). However, I am adding other sizes to fit the diameter of other stethoscopes (7mm, 8mm, 9mm and 10mm). I am also attaching the Fusion 360 file for those who may have different diameter tubing on their stethoscope. In the Fusion file, you just need to change the tube_diameter parameter to whatever diameter your stethoscope tubing is. Make it it smaller or bigger than the actual tubing size depending on how snug you want the fit to be on the tube itself. For those that don't have access to Fusion or don't know how to use it, please feel free to request a different size and I will be happy to upload STL's reflecting the requested size.

The design utilizes 2 M2x6mm socket head (or T style star head) screws, and 2 M2x4mm brass heat inserts. I am also going to include a case bottom STL that does not require the brass heat set insert, for those who would just rather self-tap screw directly into the plastic. You'll need to print one of the bottom pieces (with your choice of using heat sets or just tapping plastic), one clamp piece, and one top piece.

Print Settings

I have printed this with multiple different settings and haven't had any issues, but my final version settings are this:

Infill: 40%, grid
Solid layers: 5 bottom and 5 top
Perimeters: 3
Layer Height: 0.2mm