You can easily make artificial sandstone with the help of our gel acid etching agent. It eliminates the smooth casting skin after casting and allows the fine sand grains to appear on the surface. The perfect mortar for this technique is our STEINGUSS.
The gel is brushed onto the concrete after demoulding and etches the hardened cement on the surface. This hisses and smells strongly, which is why you should not do it in the living room. But it is much more harmless and enjoyable than if you tried it with pure hydrochloric acid thanks to the gel-like consistency. The gel is brushed off with plenty of water after a short time, and the process can be repeated as needed.
Since the active substance is a strong acid, the product must be used with caution. The 500 ml bottle has a child resistant cap. The instructions on the back must be observed.
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