To effectively farm cementing paste, put the achatina in a cage and set it to wander. It will generate 100 cementing paste in its inventory over a period of time, as well as dropping one every 60 seconds or so. Keep in mind that the cementing paste generated caps at 40, so be sure to empty it’s inventory frequently as possible. Although it is labeled achatina paste, there is no visual or use-case differences. They also increase the spoil timer on organic polymer so I recommend using it as storage for poly.