I get delivered firewood from this guy that doesn’t want to pay the dump so he brings it to me no charge and sometimes brings me beer. I wasn’t home at time he unloaded. Long story short. Turns out its Black Walnut. I had never seen anything like this but knew it was a hardwood. Started to crack so i painted boths ends of the 7 or 8 logs. 16″ not including the bark and and range from about 36″ to16″ tall. Do not want to waste this beautiful wood. What do I do? Tried cutting it myself. Hahahahah!