I learned that environmental tech in 1.12 on single player is utterly pointless. Due to the world not constantly running while offline, you will spend, probably quite literally, a year to be able to upgrade to a high tier of void ore miner.. It's been 3 weeks and just barely was able to make a tier 2. It just hit me after I set it up and realized its not noticeably better than a tier 1. Thats while running 6 tier 1's at once. For 3 weeks! This mod, though great, is useless in single player. And it just hit me like a ton of bricks. Rant over, but still something I "learned". I also can't figure out what a piezo modifier does. Googling "environmental tech 'piezo modifier'" gives me results in Chinese....literally. FML.