28,6mm Handlebar GPS mount with AMPS pattern (Standard version)

I designed this adapter to mount a GPS or phone holder that use the AMPS holes pattern on a 28,6mm handlebar, and 4 screw and 3×5mm rilsan bracelets.

This diameter is the same on some naked bike such as MT-09 and is very common on off-road bikes. 

This model is supposed to be printed with 2 materials : 

1. The AMPS plate with hard materials such as PETG, ABS ASA
2. The two bracket that hold the handlebar need to be printed in flex materials, such as TPU, to get a strong adherance so the whole system will not rotate.

I provided 3 variations : 

1. A fork of the AMPS plate but for bigger screw than usual designed to be used with 4 rubbed dampening spacer. That's a design that use even on off-road riding to dampen a bit of vibration to prevent damage on phone stabilizer and moving parts inside a GPS I have no issues so far with it. I suggest to print theses spacer with no infill but larger wall perimeter than usual. It will lead to a bit of flexibility. 
2. AMPS plate without spacer, with 6,5mm diameter screw or less.
3. AMPS plate without spacer, with 5,5mm diameter screw or less.

Fusion 360 Steps files are also provided if you want to modify the model for another handlebar.