Roman Arch

This design is intended to demonstrate the proprieties of a Roman arch. This print holds itself up without any use of glue whatsoever.

Printing:

All the parts can be printed without support, and will take about 3 hours to print every piece separately.

I recommend printing the bricks at 100% infill, as the heavier the bricks, the better it'll hold itself together. Once you printed the bricks, make the contact surfaces between those as rough as possible with some sandpaper: it'll help to keep itself together as well. All the other parts can be printed at any infill and without supports.