02-03-2017, 12:19 PM
There is a list of the durabilities listed here
http://blackliquidsoftware.com/index.php?/files/file/22-blacksmith-tools/
Technically gemstone tools are the best, but they are kind of hard to make and expensive to buy.
As stiles said, muskets are good for building some of the fort or native buildings, but other than that they are just for trade.
The tin and copper mines need to be upgraded twice and then they are infinite.