Ereo
Helper
1. There is a special sort of tree that can help you. You should be able to get the seeds from the stumps in the secret woods, and later they grow in a different location that you can open after completing the community center.
2. I usually do trips from 10 to 20 because I don't like going up and down the same floor all the time. Sometimes you're lucky and hit a bunch of copper nodes together on a floor. Accquiring material can be a bit grindy. You can also buy them at Clint's, but it is pretty expensive after the first year.
2. I usually do trips from 10 to 20 because I don't like going up and down the same floor all the time. Sometimes you're lucky and hit a bunch of copper nodes together on a floor. Accquiring material can be a bit grindy. You can also buy them at Clint's, but it is pretty expensive after the first year.





But do save it, since it is likely at some point you'll need it and the sell value is so low you'll be kicking yourself later.