Well I have been cast items in bronze and aluminum for about 10 years but I am most definitely still a novice. Spent all last weekend trying to make a mold of a tiller to rudder yoke and just never got a mold that was good enough to fire up the furnace for. For me its just part of the hobby. My furnace is a propane with electric fan type, and will hold a #10 crucible, I have used a #12 but its tight. I have about 3 cf of green sand and a fairly decent sand table set up, I'll post a picture of it on a thread I saw on this forum. Hopefully I'll be posting pics of the yoke soon. I have made this piece before but I was trying to cast a 3/8" hole for the shaft using a core and well it just didn't work out. I'll keep trying.