Unless I fucked up this should be min R. U won't cath me dead attempting I in unmodded. Given this is min Glyphs and roughly min arms getting lower G would require heavy trial and error by using multiarms. Given the arm that delivers tin cannot be a standalone hexarm, due to access point restrictions min G probably involves having one of the qs/metal arms deliver both. Hexarm + track to deliver tin and output the rest of the metals can beat this due to fewer I, someone probably gets it.