Khukuri Identification

[Thomas Linton]

How would you remove the rust on something like this?

For light rust, I've been using a Flitz-like product with rough paper towels (Rub hard.), followed by mineral oil. For serious rust, I soak in Evap-O-Rust (removes only rust), then sand w/ 2000 grit to remove resulting gray surface.

 

[JimmyJimenez]

Thomas,

What is the main ingredient in this product that removes the rust?
Also, when you say soak, how does it affect the non rusted areas it comes into contact with? It kinda sounds like it does something similar to what Naval Jelly (phosphoric acid) does, which is to grayen or otherwise darken the metal?
Evaporust?....... That surely sounds like good stuff if it does anything like it's name implies



Thanks for your post, and thanks in advance for anything else you can share

 

[JimmyJimenez]

Just did a quick search on this product:

A water-based, non-toxic liquid that REMOVES RUST from ferrous metals without harming surrounding materials, people or the environment. Cleaning of rust occurs by selective chelation, a natural chemical process which removes iron molecules selectively from iron oxide.

EVAPO-RUST™ also PREVENTS RUST when clean steel or alloy is dipped, then allowed to dry. EVAPO-RUST has won two coveted awards in 2001: named as one of the “Top 100 Inventions” by Research and Development magazine, as well as one of three awards for “Outstanding New Technology in Industrial Cleaning” by Cleaning Technology magazine.

Sounds impressive!!!

HOW IT WORKS:
EVAPO-RUSTTM works at a pH of 6.1 to 7 (neutral) through selective chelation. This is a process in which a large synthetic molecule forms a bond with metals and holds them in solution. Most chelating agents bind many different metals. The active ingredient in EVAPO-RUSTTM bonds to iron exclusively. It can remove iron from iron oxide, but is too weak to remove iron from steel because the iron is held much more strongly.

DIRECTIONS:
EVAPO-RUSTTM is easy to use. Fully immerse the rusted item in EVAPO-RUSTTM and check progress in about 30 minutes; no scrubbing necessary. Soak times will vary from 30 minutes to 24 hours depending on severity of rust, type of steel, and temperature. EVAPO-RUSTTM is water based, therefore the active molecules will slow down as temperature decreases and increase as temperature increases. We recommend utilizing EVAPO-RUSTTM at a bath temperature above 50° F.

Thanks for the product tip, I will definitely be storing it in my memory banks

 

[jamesraykenney]

Just did a quick search on this product:

A water-based, non-toxic liquid that REMOVES RUST from ferrous metals without harming surrounding materials, people or the environment. Cleaning of rust occurs by selective chelation, a natural chemical process which removes iron molecules selectively from iron oxide.

EVAPO-RUST™ also PREVENTS RUST when clean steel or alloy is dipped, then allowed to dry. EVAPO-RUST has won two coveted awards in 2001: named as one of the “Top 100 Inventions” by Research and Development magazine, as well as one of three awards for “Outstanding New Technology in Industrial Cleaning” by Cleaning Technology magazine.

Sounds impressive!!!

HOW IT WORKS:
EVAPO-RUSTTM works at a pH of 6.1 to 7 (neutral) through selective chelation. This is a process in which a large synthetic molecule forms a bond with metals and holds them in solution. Most chelating agents bind many different metals. The active ingredient in EVAPO-RUSTTM bonds to iron exclusively. It can remove iron from iron oxide, but is too weak to remove iron from steel because the iron is held much more strongly.

DIRECTIONS:
EVAPO-RUSTTM is easy to use. Fully immerse the rusted item in EVAPO-RUSTTM and check progress in about 30 minutes; no scrubbing necessary. Soak times will vary from 30 minutes to 24 hours depending on severity of rust, type of steel, and temperature. EVAPO-RUSTTM is water based, therefore the active molecules will slow down as temperature decreases and increase as temperature increases. We recommend utilizing EVAPO-RUSTTM at a bath temperature above 50° F.

Thanks for the product tip, I will definitely be storing it in my memory banks

Just know that from MOST report that they WAY underestimate the times for treatment...

I got a couple of gallons of the stuff but have not tested it yet...
I seem to remember that it leaves a black finish on the surface, but that it is easy to remove.
What is supposed to be very good about it, is that is is good at removing the little pin sized rust spots that are DEEP... It will just keep on eating down untill it reaches bare metal.
A tip... I have heard that it works a LOT faster if it is stired a bit while it is working...
Also... it is NOT used up when it is solid black, it will just work slower...
There are a LOT of tips on using the stuff on the internet.

 

[JimmyJimenez]

Thanks for the extra tips

Though I have no current need for it, there is no doubt in my mind that somewhere down the line I will be needing to use this stuff.
Good to have this info handy