"18 degree LEGO" to make a circle or arch

I've wanted to make this for a while. I would love to print and test, alas my heat bed died last week no printing before I repair it. Id love to get your feedback and hear how you go.
Well I was desperate so I did an ABS print on a cold bed! You get the idea. The warping of the base prevents a good fit but a heated bed, pet-g or pla print will come out fine.
Just remixed it to have a better external face and base. I have a new piece based on this coming soon.