Bicycle iPhone holder - Universal-ish

Started using my phone for navigation on longer gravel trips, needed a phone holder that fit my stem. This setup fits my 90mm relatively normal stem that came with the BMC I am lucky enough to own.

Stem:
https://tinyurl.com/y3bdrnls

You will need:

Spring:
Closed end tension spring, 1/4 inch around and 1.5 tall. I found them in a junk drawer, I think they came in a mix pack from home depot.

Coat Hagner wire
Thin, cheap coat hanger from the dry cleaner. Cut two pieces. 3 inches long each.

Zip Ties:
I used the thinner type and they fit nice on these parts.


Assembly is pretty straightforward:

1) Print the parts, one of the stem hugger, two units of the cradle. Print with supports on the hugger, and orientate with the arms pointing up. Cradle needs no supports. I used PLA+ at 50% fill.

2) Remove the supports on the bottom side of the hugger, sand/scrape smooth. Test that part on your stem.

3) Give the arms a dry run on the main body to test that every