I would say that the frame looks sturdy enough, but the mdf top might not last too long. If you use anything like wd-40 while cutting, and get it on the wood which will happen, it will soften the wood, causing the top to weaken. I would suggest either a thick piece of construction grade plywood, for best would be a piece of maple butcher block. That is what most work benches are made of, and the will hold up to anything. Plus it would give you a sturdy surface to bolt a vice to or whatever. Just my opinion.