Another option is a product called Penetrol by a company called Flood. It is used as a paint conditioner, but it can prevent rust. Just read the rust prevention directions on the back. It has worked great for me. I put a coat on my scroll saw, band saw, and oscillating spindle sander surface so far. It creates a clear film that hardens over the table top and it doesn't rust. It has been a few months since I applied it and still no rust. I use propane heat and my shop gets very humid in the summer, still no sign of rust on the surfaces treated. I am happy with it.