Refinishing A Rusted Cast Iron Sink DIY

The second messy project in here is the 100 year old cast iron sink. It has some pretty terrible rust spots as you can see in the pic below.

I think I can salvage the sink, but we're going to have to lose the overflow. It's pretty rusted out. The first step was to clean and remove any loose rust. I also used a rust dissolver and scrubbed the rust spots as best I could. Then I sealed the rust with a rust sealer. 

I'm going to use 2 different types of bondo to fill in the holes. The first one is made for deep holes. I applied it as per the directions and let it dry. 

The goal here was to just fill the big holes as best I could with 2 thin coats and then sand it smooth after it dried.

The next step was to use a topcoat bondo and fill in the imperfections. You can see in the pic below what that looks like after sanding.

The area that was rusted is now perfectly smooth and matches the curve of the sink perfectly. The next step is to apply a 2 part white glaze to the sink so that it looks brand new.

If this was a sink that was used every day I would hire a company to reglaze the sink. But because the wear and tear will be very minimal I'm using this DIY product instead.

Finding the right faucet took some time. This sink is set up for 2 separate faucets - 1 for hot and one for cold. We wanted something that looked historic, but with an upgraded modern feel. We picked this reproduction set created by Strom Plumbing.