Trap Door in Stone Floor (OpenForge compatible)

These are 1x1, 2x2, and 3x3 OpenForge stone floor segments, each of which contain a **trap door.**

They print without support on my Printrbot Simple 2014.

The pieces are completely compatible with OpenForge and DwarvenForge as 1x1, 2x2, and 3x3 stone floors.

Thanks to [my Patreon supporters](https://www.patreon.com/BrentNewhall) for their contributions, which made this piece possible.