Edit (September 2020): I wouldn't use this thing to fix an iPhone 6s to a bike anymore as (depending on the material) the grip to the phone might be way to lose. Your phone could fall out of the mount and get damaged (e.g. when you cycle over roots). I'll upload a much lighter, smaller and safer mount that I've been using for the past months soon! Link: https://www.myminifactory.com/object/3d-print-iphone-6s-bike-mount-138461
This thing is a simple bike mount for an iPhone 6s.
You can easily attach it to your bike with up to three zip ties.
Before printing, please check whether the part fits on your bike. The holder is designed to fit on round objects with a diameter of up to approx. 33 mm. It is no problem if the bar of the bike is smaller as long as the zippers are properly tightened.
I have included a file called "Bike_Test", which is a thin cross-section of the mount.
Please also make sure that your phone fits right. I have tested this file successfully with an iPhone 6s, but different materials or different printers might result in slightly different dimensions of the print.
To be sure, I have also included a file called "IPhone_Test. It is a thin cross-section of the iPhone mount which can be used to determine whether the print coming from your machine using your material fits on your phone.
Be careful and always check the part before using it with your phone. I cannot guarantee the functionality and/or safety of the parts.