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Bust Rust

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Boeshild Rust Free
White bottle of spray
Enlarge Image
Rubbing off rust bubbles
Enlarge Image
Rust Free bubbles as it penetrates
and breaks down the rust. It also
emits a strong odor, so work in a
well-ventilated area.
Metal slab with 3 cleanings on it
Enlarge Image
All three methods removed the
rust on our set of cast-iron
tablesaw wings, each requiring
about 5 minutes.

Boeshild Rust Free

Boeshield Rust Free attacks rust with a phosphoric-acid formula, so when applying it wear latex or rubber gloves to prevent skin burns. Spray Rust Free onto affected areas, allow it to penetrate for 30 to 60 seconds, and then scrub with a scouring pad or steel wool, middle photo. (If left on more than a couple of minutes, Rust Free will create dark stains that could become permanent on cast iron.) Repeat if necessary. This product removes the rust as well as dark stains, but it dulls the patina, bottom photo. If you're cleaning only part of the top, this dull look will be noticeable.

Continued on page 4:  Power away rust


Comments (27)
fcoppage wrote:

WD40 and scotch-brite pads, then 400 grit wet & dry with a sanding block (2x4) and WD40. vinegar also works well. no power tools! especially on the tool tops, can cause sharp points and damage projects. p.s.: never use a silicon product either.

1/23/2016 11:03:34 AM Report Abuse
BrianH1992 wrote:

One note I forgot to add, I use steal wool when I use the WD-40 on my cast iron tables, then the automotive paste wax.

1/19/2016 01:38:31 PM Report Abuse
BrianH1992 wrote:

I use WD-40 on my cast iron top for my table saw. Then I use an automotive paste wax to protect it and keep the wood sliding across smoothly.

1/19/2016 01:36:44 PM Report Abuse
patzwald wrote:

PS. Johnson's Paste Was is great for the cast iron and lots of other shop uses. I have a Shopsmith and it keeps everything sliding smoothly.

1/8/2016 01:00:03 PM Report Abuse
patzwald wrote:

I have done two Craftsman Table Saws. I try to pull the extensions off and soak the cast iron in large tubs with vinegar. For the table top I made a dam out of duct tape and used the vinegar again. Over night works great and sometimes it takes a couple of applications. I finished it off using an automotive style air file and 220 paper. Great results. Vinegar is the real trick and I use the grocery store variety straight then flush with water.

1/8/2016 12:58:48 PM Report Abuse
Friend52623 wrote:

What about sandblasting to get heavy rust off?

1/8/2016 11:58:26 AM Report Abuse
Friend52623 wrote:

What about using a sandblaster to get the rust off?

1/8/2016 11:56:51 AM Report Abuse
Done it myself wrote:

Again it depends on the amount and depth of the rust. I use wd40 and sand with orbital sander and either 120 or 220 grit, then clean completely with paint thinner then finally coat with johnson paste wax.

10/20/2015 06:48:29 AM Report Abuse
mywildflower wrote:

Equal parts water and 5% vinegar solution (from the grocery store)

7/30/2015 06:37:51 PM Report Abuse
roberthitchins wrote:

@egates07 wrote "what do we get when we mix hydrogen and air? H2O of course". This is incorrect. Hydrogen is a diatomic gas and CANNOT combine with oxygen (another diatomic gas) without a lot of energy. Combining the two at normal pressure/temperature will never result in H20. Rust formation requires a relative humidity of at least 50%. Check out for details as to how rust REALLY forms.

7/23/2015 12:28:45 PM Report Abuse
jsmallho_219976 wrote:

I use Meguires automotive products. If the rust is light, Meguires Cleaner Wax works well. If the rust is heavy use a Medium Cut Polishing Compound, then the wax. It protects and also makes the table slick.

7/23/2015 09:57:11 AM Report Abuse wrote:

you can scrape a lot of rust dust off with a razor blade, you use to remove paint off glass no sludge or nasty slurry just rust dust

5/28/2015 07:35:07 PM Report Abuse
abibbero wrote:

My recent move from Colorado to Florida taught me about the need for rust mitigation very quickly. After using the WD40 and green scotch brite pad method to remove the rust. I then turned to the local boaters for suggestions about long term care. West Marine Corrosion Block is the trick. I have been using it for a year now and everything still looks great.

5/28/2015 09:51:47 AM Report Abuse
Plastic Man wrote:

Been using Johnsons paste wax for years now, just wipe on a thin coat and leave it. One winter the temperature jumped up from freezing to 60 degrees F and all my cast iron tops were sweating. That time I used Boeshield T-9 and let it dry. Saved everythibng from even the slightest rust.

3/9/2015 09:16:29 AM Report Abuse
doneby94441 wrote:

A couple years ago I was restoring a bunch of old planes. I bought a couple gallons of Evapo-Rust and put the plane parts in a bath for a day or two. Then polished off the scale with steel wool or a dremel tool brass brush. Nice look and doesn't remove all the patina.

8/29/2014 09:16:55 AM Report Abuse
garyhill wrote:

I've been using paste wax for years, it has served me well.

8/28/2014 09:36:46 PM Report Abuse
jaglfr1248 wrote:

Whenever I get rust on my 66 year old cast iron table saw top I use WD-40 & a piece of fine grit (300) emery paper. It leaves a fine protection on my saw when I'm done.

8/28/2014 09:02:43 PM Report Abuse
pi.gregoire wrote:

I seal my cast iron tables with flore paste wax.

8/28/2014 05:47:50 PM Report Abuse

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