This bracket is for keeping the Zoom H1 at his assigned position.
The bracket has the right spacing to the wall to avoid that the mic frame get in contact with the wall.
If you don't have a Zoom H1 you can buy one via the following affiliate link.
(100%) see notes
The wall thickness of the *.stl file is 1.2mm if you use an extrusion-with of 0.3mm and at least two perimeters, you will end up in a 100% infilled part without any additional infill, because there is no gap between the perimeters.
Monting with tesa powerbond
I mounted my Zoom H1 holder with theas powerbond. http://amzn.to/2bDi26S