my spike board is actually made of a rectangle of aluminum 1/4in thick ,its about 16in x 24in i drilled a 2in hole in it at one end. then i welded a spike to a flat piece of steel about 4in square. then i bolted the sqaure on the underside of the sheet of aluminum with the spike sticking up thru the hole. i figuer this way i can take the spike off to sharpin or replace it. i built it to last a life time. clamped down on a good heavy table it ain't moving.
