Concreation

[Fla.Hillbilly]

How to remove concretion from a point? I have 1 that had been laying on a layer of it and now its really stuck on good.

[Overshot]

Vinegar soak then rinse w water

[Hoss]

Caliche is calcium carbonate that builds up on the surface of rock . It can be safely removed with a vinegar soak.

[Fla.Hillbilly]

Thanks, will be doing it tonight

[Dave P]

Here's before and after a 24 hour vinegar soak to remove calcium buildup.

[Fla.Hillbilly]

Guess mine will take longer. Much thicker than that. Up to a 1/4" in places.

[Dave P]

Let us know how it turns out.

[Fla.Hillbilly]

Vinegar didnt do much. Had to resort to something a bit stronger. 2 days in CLR and still had to work at it.

[Overshot]

You may have to refresh the vinegar as its acidic properties weaken as it dissolves the calcium carbonate into solution. If yours is thick, it may need several.

[Lone Star]

I have never been a fan of removing natural occurring concretions. It shows the age better.

[vonfatman]

I have used shrimp cocktail sauce (any brand) with great success. Cheap is what I use.
To remove the black scum that many of our pieces get around here. It works great. From a couple hours to a couple days. Depends upon the thickness of the scum. It can be used on a stiff brush too.
But it does not seem to take away concretions. I have some "test pieces" to test out the vinegar.
Thanks. Great tip.

v fm