Why is it Called Sandblasting if No One Uses Sand Anymore?
While the term "sandblasting" has stuck around for over a century, the use of actual sand (silica) has been largely phased out due to health risks and surface damage. Modern "abrasive blasting" uses engineered materials like crushed glass, garnet, and walnut shells to provide a faster, safer, and cleaner finish.
The History of the Term
The process of abrasive blasting was patented in 1870 by Benjamin Chew Tilghman, who noticed the effect of wind-blown sand on windows in the desert. For decades, beach or river sand was the primary media. However, as the industry evolved, we discovered two major problems: it was dangerous for the lungs, and it was actually quite "dirty" for the metal.
The Problem with Real Sand
If you hire a contractor today who is still using actual playground or masonry sand, you should be concerned for two main reasons:
Silicosis Risks: When sand hits a surface at high speed, it shatters into a fine dust containing crystalline silica. Inhaling this can lead to silicosis, a permanent lung disease. The Occupational Safety and Health Administration (OSHA) has strict regulations regarding silica exposure for this very reason. (Source: osha.gov)
Contamination: Natural sand often contains moisture, salts, and organic matter. If you blast a car frame with beach sand, you are essentially "peening" salts into the metal, which will lead to rust bubbles under your expensive new paint job.
What We Use Instead
Today, the industry has moved toward "Abrasive Blasting." We use "media" that is specifically engineered for a consistent size and hardness.
Recycled Crushed Glass: This is our most popular alternative. It contains no free silica and is made from 100% recycled bottles.
Coal Slag or Copper Slag: Industrial byproducts that are very hard and sharp, ideal for heavy-duty bridge or tank work.
Soda Blasting: Using sodium bicarbonate (baking soda) for extremely delicate work where you want to remove grease or light paint without etching the surface. (Source: The Soda Blasting Association)
The "Dustless" Revolution
The biggest evolution isn't just the media, but the delivery system. By mixing the abrasive with water (Dustless Blasting), we eliminate the dust cloud entirely. This allows us to work in residential neighborhoods in Southlake or Carrollton without a silica-filled dust cloud drifting into your neighbor's yard.
According to the Center for Construction Research and Training (CPWR), wet abrasive blasting is one of the most effective "engineering controls" for protecting workers and the public from hazardous dust. (Source: cpwr.com)
Summary: A Better Way to Prep
So, while we still call it "sandblasting" out of habit, the modern process is a high-tech, eco-friendly, and health-conscious trade. At Ready Surface, we prioritize using the right media for the right substrate, ensuring your project is handled safely and professionally.