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How to remove pitting from table saw top?

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Forum topic by Vrtigo1 posted 11-12-2012 08:34 PM 1200 views 0 times favorited 4 replies Add to Favorites Watch
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Vrtigo1

432 posts in 1681 days


11-12-2012 08:34 PM

My saw had some built up surface rust from sitting in a non-climate controlled Florida garage so I sprayed the top pretty liberally with Boeshield Rust Free and was letting it set for about 30 seconds when my wife came in and asked for help with something in the house. Long story short, I forgot about what I was working on and didn’t remember until I had to go to the garage for something a couple days later. The top of the saw looked “pitted” pretty badly…pitted may not be the right word because I used a plastic paint scraper to scrape most of the “junk” off and the surface still feels flat but it’s very discolored and looks bad now. Is there something I can use to “fix” this or have I made a permanent mistake?


4 replies so far

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Vrtigo1

432 posts in 1681 days


#1 posted 11-12-2012 08:38 PM

Well, looks like they answered my question for me. Note to self, read the FAQ first next time…

I sprayed Rust Free™ on my Table Saw and after I wiped it off the surface has darker blotches?
What probably happened is the Rust Free™ was left on a little too long and began to form an iron phosphate coating where the rust used to be. The way to clean it up is to spray Boeshield T-9 on as a cutting lubricant, then go over the surface with a Scotch-Brite pad on a random orbit sander. That should make it look like new, and the residual T-9 will prevent further rusting.

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Tennessee

1471 posts in 1204 days


#2 posted 11-12-2012 08:40 PM

Respray your rust remover ands hit it with steel wool for starters. The discolorations are no big deal, as long as the top is flat, and does not leave marks on your projects. If it is that bad, you might be looking at having it milled, but my gut tells me you can clean it to be quite usable with over the counter rust remover and steel wool, followed by a wet or dry sanding up to about 600 grit. After that, some paste wax should keep it nice and fresh.

-- Paul, Tennessee, http://www.tsunamiguitars.com

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Tennessee

1471 posts in 1204 days


#3 posted 11-12-2012 08:42 PM

There you go..typing at the same time, apparently!

-- Paul, Tennessee, http://www.tsunamiguitars.com

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a1Jim

112326 posts in 2267 days


#4 posted 11-12-2012 09:27 PM

I’ve always had good luck removing rust and glue from my table saw,jointer and planner by using a scotch brite pad and some automotive rubbing compound with a random orbital sander on top of the pad going over it more than once in really bad spots and then using a ROS on a soft cloth to first clean of the excess compound and then to apply wax to the surface.

-- http://artisticwoodstudio.com Custom furniture

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