Terry Mac

Because my masonry skills are very basic and I want the hollow circular base to store my wood. I have to bridge the top somehow. If you have suggestions on how I create a masonry top I am all ears!

Thanks Jay! That's sort of been my thought but wanted some confirmation from those who have done it before.
Terry

So we are building a cob oven with a cinder block base that is hollow to hold our wood. I have seen some images of people using a board on top of the base but covered in cob and providing the platform for the oven to sit on. Nowhere can I find anything about what kind of wood, how it should be sealed or prepped. Any suggestions? Thanks!