I almost quit the game within 3-4 minutes because I couldn't figure out how to place pipes in the scene, but I'm so glad I stuck with the game to figure it out. After learning how it works mechanically, this has been my favorite game of the jam thusfar. I played through the campaign and was really impressed with the depth you can get out of the game. Watching the contraptions in motion moving boxes around is intensely satisfying. The game still needs a little polish. The placement system is unintuitive and even with practice stuff like placing only one pipe at a time or accidentally erasing entire zoom grids were common issues during my run of the campaign. That said I still think the game is excellent.
Here's a screenshot of my final grey box factory, btw.