This is a very simple spheroid ring adapter that allows full 3 axis rotation of any strap-on handlebar light.

If your bike handlebar is not straight, and/or the part where you intend to install your light is not aimed straight at the road, then the light mounted there will not point straight ahead.

Even if your light has a twist Left/Right correction, then some of you might have another issue: those like me who have an STVZO-compliant light (Sigma Aura 35 lux) this means that the light beam has an upper horizontal cut-off so as to avoid glaring the road users in front of you, which means the headlight not only needs to be pointed straight ahead, but also perfectly horizontal. And that is not possible if the handlebar itself is not perfectly horizontal.

On my handlebar, the only part that's aimed straight ahead is the center near the stem, and that part is already occupied by the meter, which can't be moved... all the rest is twisted and tilted all over the place!

So this ball allows to make the aiming of the light accurate and independant of the handlebar twist and direction.

This must be printed in TPU or any other flexible material, or the opening will be too narrow to allow mounting on the handlebar. The TPU also helps for stability on rough terrain

Depending on the handlebar, I made 2 versions in 22mm and 1 inch which whould cover 99% of the users, if you still need a 32mm or any other diameter, just resize the 1 inch in your slicer in the X/Y directions

The example pics on my handlebar are with the unmodified 1 inch version