Rust on my rounds....

[ieezitin]

Gentlemen..

i purchased on Ebay a little set of Gage Blocks, when i opened the box some were found to be a little rusty, cannot complain only paid $20 including shipping, anyways i digress some have little rust blotches on and it interferes with the fit and the overall size as well as you can imagine, is there a way to remove the build up of the rust that will eat it away and leave just the ground block intact, i know i will still have pits but i don't really care i am just trying to make these useful.

Just a thought....... suggestions??

Anthony.

[chucketn]

I use a saturated solution of vinegar and table salt. You must apply some form of protection immediately after cleaning the items when removed from the vinegar solution or flash rusting will occur.
I prefer this method to electrolysis.
Chuck

[ScrapMetal]

My favorite rust removal product is called Evapo-Rust. Non-toxic, water clean up and will not harm any finish (unless the finish uses oxides like gun bluing, etc.)

Can be found at some auto parts or home improvement stores. It's a bit on the expensive side but a gallon will go a long way as it is reusable.

Here's a link to their site: http://www.evaporust.com/

-Ron

[oldgoaly]

I've been using this on things that don't fit in the molasses tanks, http://www.wmbarr.com/product.aspx?catid=32&prodid=81

[TomG]

So you guys do realize that acid dissolves metal, right? Weak acids don't dissolve much, but since we are dealing with millionths of an inch here that might not be a good idea unless you want to re-label them for size. I'd go with electrolysis.

Tom

[f350ca]

Just asking a question. Does electrolysis (which is on my to try list) not remove ANY of the none oxidized material?
If so COOL

[TomG]

As far as I know Greg, that is true. Once the oxides are gone the process stops. I've used it before and only the rusty areas bubbled.

Tom

[f350ca]

Now that is neat.

[Mayhem]

Greg if you take a look at my shaper thread you will see the parts I zapped. The rusty areas will be black/grey afterwards but will polish up. I'm posting on my phone right now, otherwise I would link to the post/pics

[ScrapMetal]

(10-01-2013, 09:12 PM)TomG Wrote: So you guys do realize that acid dissolves metal, right? Weak acids don't dissolve much, but since we are dealing with millionths of an inch here that might not be a good idea unless you want to re-label them for size. I'd go with electrolysis.

Tom

On bigger stuff I plan to get set up for using electrolysis even though it's a bit of a mess. Until then, the Evapo-rust works just as well. It's not an acid and won't attack the metal.

-Ron