Back in the late 70s to early 80s I was working for my neighbor doing wood working. One of the hardwoods he used since it was plentiful on his and my family acres was black locust. In fact I built a deck on the back of my families house totally out of black locust. I built from chairs to cabinets, doors and actually help make a sailing mast a few times. I do remember that that wood would dull high speed steel quick and resharping hand planes alot after working with that wood . I found a place in Greenville Texas that sells 1x10x8 black locust planks for 25 dollars and since I live in Rockwall Texas it aint to far. I have a few projects around the house I am going to use it for. I was just wondering what 7 1/2 saw blades and 10 inch saw blades would be best for cutting it now days?