Do you need to clean a large metal surface or a smaller, more intricately detailed one? Sandblasting is the method for the job! While the term “sandblasting” may conjure an image of pummeling a surface with high-pressured sand grains, you can actually apply different media and degrees of pressure depending on the job. Whether you want to clean graffiti off a wall, strip rust or corrosion off equipment, or remove paint from furniture, sandblasting is a thorough method. But before you begin, here are a few steps to take when preparing your surface for sandblasting.
Assess the Surface
Before flipping the “ON” switch for your sandblaster, take a few minutes to look over the surface you want to treat. What is it made of—wood, metal, cement? And what are you trying to remove—paint, rust, grime, moss? Once you’ve identified the surface and the substance you wish to remove, you can determine the best media to use (sand, garnets, glass beads, dry ice, or sodium bicarbonate, to name a few) and the pressure setting. Otherwise, you might discover you’re only inflicting more damage.
Do a Preliminary Clean
Why bother cleaning before you sandblast a surface? It’s a necessary step that facilitates proper sandblasting. Remove dirt and debris with cleaners like soap and water or degreasing agents. A clean surface enables the sandblaster to work more efficiently and with less cleanup afterward. It ensures a more uniform finish as well. This is especially important if you’re trying to sandblast designs or other detailed work.
Protect Sensitive Areas
Some areas might need to be shielded during the process. Cover these parts with tape, plastic sheeting, or other means to protect them. This will maintain the shape, surface, or design of the areas you don’t’ want to sandblast, preserving their appearance and integrity.
Choose the Right Sandblasting Media
We’ve talked about this a bit already, but sandblasting doesn’t always involve sand. Pick a medium that works for your surface. Walnut shells, for example, clean more gently and are better suited for materials that might be scratched or scarred by sand or other abrasive minerals. Aluminum oxide, on the other hand, works well for tougher surfaces and harder-to-strip substances like rust and paint.
Safety First
Sandblasting isn’t just messy; it can be hazardous. Set up your workspace to protect yourself and others as well as the surrounding area. Wear personal protective equipment (PPE), including goggles, gloves, a respirator, and a coverall suit. Work out in the open or with adequate ventilation—never in an enclosed space. Lastly, test your sandblaster before you begin to eliminate any surprises.
Those are the steps to take when preparing your surface for sandblasting. Not sure if you’re ready to tackle the job yourself? If you’re looking for a sandblaster near the Bay Area, contact us today for a consultation for sandblasting and other services!