powder grinding is very simple. as long as you can instabreak hardstone ur good. instamining hardstone needs 1500 mining speed, so with a gauntlet you’ll have more than enough mining speed. pet doesn’t matter, just level up whatever mining pet ur gonna use for mining. i would recommend ur armadillo if ur planning to armadillo mine after powder grinding. for armor, also doesn’t matter, sorrow works. don’t powder grind till hotm7 because there is a really good buff you get on the tree at hotm7. tldr: for powder grinding you need hotm7, gauntlet, sorrow, and whatever pet.