I am hoping i found some cheap wood that is dry and ready to burn but in researching safety i found an older post that has left me questioning my "score". I found "kiln dried Douglas fir". It looks to be end cuts from construction lumber. I see this being called dimensional lumber in the old post i linked. Is this a good find and safe to burn? I know some caution is involved but if i mix with a load of hard wood it should present an issue correct?