Safety question When Sourcing Recycled / Reclaimed Wood
So there are a few lumber yards / scrap yards that take in old lumber and sell it by the plank / board. I thought some of it would be nice to use for making some simple tables / storage boxes.
1) is there an easy way to tell whether something has been treated with chemicals or not for outdoor use and that I should stay away from it?
2) Aside from chemicals, is there something else I need to avoid?
3) Bonus Question: I am having a dickens of a time figuring out what type of wood I am looking at when it is in the recycle yard. I will look at some boards and have no idea whether they are pine, redwood, doug fir or cedar. Any help on being able to figure this out better? The only "test" I have is pressing the fingernail into the end grain test to see if it is soft or not.
Studies have shown that having a ladder in the home is more dangerous than having a firearm. That's why I own 10 guns... in case some maniac tries to sneak a ladder into my house...