Barnacle encrusted resurrection

[joeradza]

Hi, I was hoping I could get some advice. I usually hang out in the traditional forums although I do own and carry a modern folder. I just found this on the beach in Florida while on vacation and figured it would make for a good project. It appears to be sand and barnacle encrusted. What would be the best method to try and bring it back to life. Thanks.

 

[joeradza]

Thanks for moving me to the right spot.

 

[Hickory n steel]

The first thing I'd do is go to town on it with a wire brush ( probably steel at first then brass to avoid damage ) to see what you actually have.

 

[joeradza]

I was thinking something not quite as aggressive. Maybe a good soaking in ...?

 

[SW-EDC]

Possibly acetone for awhile.

 

[Bill DeShivs]

It needs to be put in an industrial-type ultrasonic cleaner for quite a while.
That should "blow" most of the encrustation off without harming the underlying material.

 

[joeradza]

Thanks Bill, you mean like a jewelry cleaner.

 

[Bill DeShivs]

Like a bigger, more powerful jewelry cleaner.
If you have a little one, it won't hurt to try it.

 

[joeradza]

Thanks guys, I'll keep you posted.

 

[Bill DeShivs]

The knife has what is called "concretion."
An ultrasonic is the least invasive treatment, though it may not work.
You could try putting a drop of vinegar on the handle. If there is a reaction, you might try several short soaks in vinegar. Rinse thoroughly after each soak.

 

[joeradza]

Used CRC and it all dissolved. Turns out to be Klein Tools 44001 from Japan. I was hoping for a diamond encrusted pirate knife.

 

[jpm2]

Never saw a klein like that.
CRC, the solvent/degreaser?

 

[eKretz]

Destined for the scrap bin with a crack like that though. Shame, it's an interesting looking little knife.