Dave, my forge area in my shop is 1/4 minus crushed granite. I really like it. Just spread it evenly, tamp it, water it and it firms right up. I have no problem rolling cart or welders on it. It is hard yet easy to work on. I will rake and water it ever now and then. Mill scale just disapears into it. I agree with you about concrete around your welding area. I have the same too.