My wife's cousin owns a marble company, so when they told us we could have free cutoff pieces, we thought it could make a cool patio.
Problem is, they're SUPER slippery.
Someone suggested pouring acid on them to 'etch' them so they'll roughen up.
I've bought and tried muriatic acid from a hardware store, and 1M sulfuric (available on Amazon, amazingly), but neither seems to do anything.
Any ideas what I can do here?