We've just released a variety of ways that water (and nefarious villains) can get from the streets into the sewers. We have a full variety of manholes for center of street (pictured) as well as grates that abut curbs. This finishes up the basic set of OpenForge City Streets.
The holes come in square and round for every variation, and the ones that abut the curbs have special bases to deal with the fact that a chunk of the side is cut out.
Grab the files on Thingiverse, they are split up between Manholes and Manholes Against Curbs
Now that the streets set is complete, it's a great time to add new ideas and vote for your favorite ideas on the Masterwork Tools Backer Site. We're planning one more release of mounts, and some miniature bases as well as some new ideas about how to tackle the great outdoors, so there's a little time for us to ramp up on starting the next set based on votes, so get your ideas and votes in!