How to Restore Cast Iron Table Saw Top

Purchasing a used table saw is more of a budget-friendly choice. They mostly cost almost half of their original price if you buy from a classified website or someone else around. Nonetheless, despite their working efficiency that may be great. Usually found on classified websites don’t look good because rust took over them.

If you have a table with a completely rusted iron top. You will want to get that removed off to restore the cast iron table saw top. Although you may have tried scrubbing over and had used sandpaper. Getting the best results is difficult without professional advice.

Here’s our professional advice that will help restore cast iron table saw top like brand-new.

Steps to Restore Cast Iron Table Saw Top

Things you will need to get started.

PE blaster or some sort of penetrant

odorless mineral spirits, steel wool, or a Scotch Brite pad, I’m using four steel wool and boiled linseed oil

1.   Remove the debris and dust off

Your first step should be to clean the surface of the table saw top, dust off debris that would be probably resting over there as mostly used table saw come up. Focus on removing soft dust in this step, a power-cleaner will make this do easy to finish.

2.   Put a penetrating catalyst.

Penetrating catalysts are kind of lubricant liquids that are used to get off the rust from metallic materials. You will wear gloves as well as a mask because you will never inhale its poor smell.

 When going into a market, precisely you will find this product in home improvements stores. A wide range of manufacturers is producing this. However, I used PB blaster one of my favorite.

After purchasing, spray it all over the table saw top. Cover every single inch including holes and edges as well. Wait and let the penetrating catalyst liquid rest up there depending upon what your manufacturer says. Ideally, 15-20 minutes are recommended.

It will soften the rust enough to remove it from a rubbing piece of rag.

3.   Wipe off the Rust.

Now it’s easier to wipe off the rust after using a penetrating catalyst. A rag will be ample for removing most of the rust. However, sometimes to remove edges that are built up from rust, they need a hard substance to root them off. A scrap does this job well.

If you don’t see results by rubbing a rag, try using steel wool that will probably work out. The only problem is with wool steel, they often leave scratches on the top metallic surface of a table saw if you try to force clean it.

Alternatives options that you can use for cleaning tough-rust areas include sandpaper, a scraper, or brite scratchpad, or normal nylon-made brushes.

4.   Apply sadpaper

The final result until now will be similar to the image below. That is not looking pretty nice. You may want to clean it further and there a scrapper will do the job. However, you can apply the penetrating catalyst twice if you want.

A 20 grid sandpaper will be a nice fit to clean the surface thoroughly. From the various options available, you better use sandpaper made from stones. Which is less harmful for war materials.

After rubbing with a sanpaper, you should now clean the table saw top with a piece of cloth. Most likely at this step, your table saw top shows restored all cast.

5.   Clean the surface

You might not be captivated by the results even after you’ve wiped off the debris, dust and clean all the rust. You will most likely want to after shiny results, which could be achieved by only buffing the tabletop surface.

Various power tools can be used for buffing, like a rubbing automotive compound or metal polish machine. Or just a simple buffer with silicon laces generally used for home cleaning applications.

You will guarantee to have a shine once you this. And if you’re thinking of what should you pour on the tabletop surface before buffing, then know this. Generally, there is nothing special but some kind of shiny liquid will do the trick as long as you are chasing after results like a brand-new. The only thing to avoid, make sure your polishing oil does not contain silicon that you can see by looking at its formula. Because silicon is not ideal and may crop up imperfections.

Make sure to use products that do not contain silicone. Scotch Silicone will stay on the table and contaminate the wood which you will most likely cut, causing imperfections in anything you paint. If you’re not sure whether or not the product you’re using contains silicone, look up the chemical’s MSDS sheet and see if it contains “siloxanes”.

Apply linseed oil on the top of the table saw

Finally, after all the rust off and your table saw’s top look super amazing. You will want at long last, and to maintain the results apply some linseed oil that will add a safety coat against rust to develop.

Linseed oils are basically known for their ability to protect a raw material. Apply it all over the top. And the end results you just get will last longer and also they reckon up an extra shine.

How to maintain iron cast table saw top

There are no hidden facts table saws required maintenance like every other power tool. On top of the list of prevention is rust, which is undoubtedly the main concern when it comes to protecting a table saw in efforts to make it last longer.

Beginning with a very basic need, keep moisture away, if it seems difficult to you is let’s assume you live in a humid area. Then, it’s best to place your table saw below a fan and make sure the area is open and enough ventilate.

Secondly, keep clean your table saw blades as well. Because debris can take over it after every use. Importantly, spreading linseed oil or wax all over a table saw can prevent rust to develop further.

About products used in this guide

For wiping

Steel wool-

It works great when rust gets stubborn, and needs more friction to wipe off. Eventually, when a brush or a fabric rag doesn’t get the job done.

A Brush of a rag

Depending on the condition of the cast table saw top. Most of the rust after applying penetrating catalyst will wipe off by rubbing a rag or a nylon burhs.


To encounter edges made of rust that required additional force, use a scrapper. Don’t overdo it instead only pull off the high-curved rust otherwise if you rub on the surface, it may leave scratches

PB blaster

The product that I used to loosen the rust was PB Blaster. I highly recommend it. To clean any dirty surfaces with odorless mineral spirits instead of WD-40 for occasions that require no water, use PB Blaster instead of WD-40.

Linseed oil

Boiled linseed oil is applied after the final results, as it prevents rust from developing on the surface by adding a protective layer that keeps moisture away.

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