The original hinge (this is a remix) is nice looking but it did not allow for 270 degrees of movement and I could not re-inforce the core with metal, to make very stiff. Also it was very big and I wanted it a bit smaller to fit M3 allen bolts.

So, this is the resulting piece.

When printing it, I strongly suggest making it 100% infill on the whole object or, at least, on it's core.