This page offers a guide on how to find Tin Ore in My Time at Sandrock. Tin Ore is an important ore for making Bronze Bars.
How to Find Tin Ore
Tin Ore can only be found in the mines once you’ve reached and unlocked at least the 3rd level of the Abandoned Ruins. To get to deeper levels of the mine, you need to search for door ways and holes downwards - most of the time they’ll be hidden behind depris so you’ll need to dig through it. It can be mined from silver spikey crystals. Once you’re at levels lower than the 3rd level, tin ore is very common and easy to mine.
Purchasing Tin Ore
Alternatively, if you don’t fancy going mining, you can purchase Tin Ore for around 8 Gols from the Eufaula Salvage Shop. Or, if you just want to skip the ore stage all together, you can just purchase Bronze Bars from Hammertime - the smithing shop. Prices fluctuate in Sandrock, but one Bronze Bar will cost around 45 Gols.