I just tried using granite. That video is outdated. More than 50 tiles depth, and it is okay. I tried different pressure, single granite break about 5400 kg   I don't know, I'll update once I found out (only if I figured out xD). Btw, how to overpressure liquid? Door compactor?   Update 1 Behold sedimentary rock, you can do it. It is not 3 anymore   Actually, sedimentary rock can hold about 1300 Kg water Left pic 1200 and it is okay, mid