"Ignoramus21268" wrote in message
...
I also vote for muriatic acid, it works great on concrete.

It also rusts steel.

First, it strips rust that's already there. Then it starts eating clean
steel. As it wears out, and if it's exposed to the air (oxygen), it rusts
the steel again.

I hesitated to recommend it because you want to catch it in this application
before it starts eating steel. But Larry is right. It attacks concrete
pretty fast, although it doesn't *penetrate* concrete very fast. It works on
the exposed surface and eats the lime, which should weaken the conrete's
grip on the steel.

If you stay there with it, you shouldn't have a problem with it attacking
the steel. It's not very fast at that. Just don't walk away and let it work
for hours.

--
Ed Huntress



i
On 2011-06-13, Larry Jaques wrote:
On Sun, 12 Jun 2011 09:22:19 -0700, "Steve B"
wrote:

How do I get the residual concrete to release from my yard sale concrete
tamper? One of those two handled things with the 8" x 3' bottom screen.
Probably paid too much for it ............... $10. Spray with vinegar
water?

Straight vinegar would probably work. But for $5 at the pool store,
you can get a gallon of muriatic acid which works instantly. Dilute it
by pouring an ounce into ten ounces of water. Pour on, wait a few, and
the concrete slides off. Neutralize with baking powder


Soak overnight in plain water?

That'll rust the portion which isn't covered in cement.


Spray with some sort of petroleum
product like WD-40 and let soak overnight.

NO.


Then hit with power washer? Or just power wash?

A brush and water, wipe or air-dry, and oil 'er up.