Apple Watch Ultra Edge Protector

After using this for a week, it has stayed on during some aggressive mountain bike riding but fallen off a few times in casual life. I added two tiny strips of 3M 300LSE thin double-sided tape and it has stayed in place since.

I use screen protectors with my AWU, but tend to work around a lot of machines and rocks and other hard objects that end up cracking the protectors every few weeks. This is extra protection, mainly meant for when I am doing hands on stuff. That said, it also makes for a nice accent piece!

The edge extends downward to maximize the surface contact on a very minimal print body. There are slight cutouts for the action button and crown dial, and the inside face is contoured to match the AWU.

I downsized the STL here 1% from actual screen size with the intention that it be a very very snug fit.

You may find this a tricky print given the very small amount of filament laid down and the exact device dimensions. Calibration, adhesion, filament, etc. will all make a difference in how well the final output stays in place.

I printed in PLA+ at 0.16mm layers. My print came in at 0.76 grams total. I did get better results with ‘Detect thin walls’ selected OFF. I also used random seams and scarfing around the entire wall (both contour and hole). I find this sometimes gives a little better grip on print faces.

While default line widths for 0.16mm were okay, I switched ALL line widths to 0.3mm and like the output much more.

MATERIALS

I think straight PETG might be the best choice of basic materials but I didn't have it loaded …

PETG-CF: An early version printed well in PETG-CF but when I reduced the model dimensions and shape slightly that filament just produced lousy results. It's still my first choice so I may try again soon.

TPU: I did a print and it fit well. Also this is just such a thin print that it doesn't really have the tension to stay in place against any movement.