Cleaning a 45" long iron object

[Rustynailsandscrews]

Thread to the object is here. This was found in an area rumoured to have been a blacksmith shop that I'm going back to hit hard. Electrolysis is the first thought to come to mind but I don't have a tank big enough to put this in. Any suggestions on how to clean this up ?
http://www.treasurenet.com/forums/what/512365-found-area-old-blacksmith-shop.html

 

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[pa plateau hiker]

I use a heavy piece of rubber from a pool liner. Use cement blocks on the outside to hold the rubber up.

 

[Rustynailsandscrews]

I use a heavy piece of rubber from a pool liner. Use cement blocks on the outside to hold the rubber up.

That's a good idea.

 

[kcm]

You can sometimes also use a small plastic "kiddie pool".