This adapter is designed to allow for attaching a shoulder strap/ harness to a Milwaukee M18 cordless trimmer/ weed wacker.  I printed both parts on their flat faces with 100% infill using PETG.  When I printed the clamp it was a bit loose on the post of the trimmer so the model has been “tightened” by 1.0mm.  The model has been holding up well to my light use.

I used an old shoulder strap from a laptop bag that I had laying around.  It works for how it was intended.  I have not tested this with commercial harnesses.

I forgot what size nut and bolt - I am pretty sure it is 5mm. 

If you print this, please let me know your experience.

Thanks.