jack connector support hephestos

this is a support for jack connector
(http://www.amazon.it/gp/product/B00H3AXFM0?psc=1&redirect=true&ref_=oh_aui_detailpage_o05_s00)
the connector is 14mm wide and 10mm high.
you need 3 m3 bolts (20 mm long) and 3 m3 nuts.
it fits very well on the left z axle engine of my prusa hephestos.
---be careful to correctly push the nuts in their slots --

i have printed it with PLA and Cura.
Cura settings:
layer height 0.2
shell+top/bottom thickness 1.2
fill density 40%
support brim 12 (it'