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This is a cover plate with a one-and-one eights hole. This should fit most off-the-shelf 12v sockets. This part is designed to be easy to print "right-side up"

If you intend to build this into a custom solution, with your own holes and additions, print this at 100% infill so you have something to drill into. Otherwise for just a single center hole, try 3 perimeters, 2 layers top and bottom and 50% infill.

If you need NO holes, try our plain cover plate HERE. If you need a different sized hole, try our version of this with a little centering pip to prevent your drill from wobbling HERE.

We recommend printing this in something temperature stable, like PETG or ABS. It’s possible that a material like HT-PLA (or even normal PLA) will work after being annealed in an oven, but beware that those materials do shrink some, and you may need to scale the model to compensate. Unannealed PLA will start to soften and warp well below the temperatures that you could expect to see inside a hot car, for instance.

Besides being relatively temperature stable and UV stable, PETG also takes machining relatively well - sanding, cutting, etc. The only thing it won’t take is paint - so print it in the color you’re comfortable with.

For a custom mounting solution and to download, please see our designs here: https://www.thingiverse.com/thing:5739408