Sandblasting is one of the most effective surface cleaning and preparation techniques. For instance, it's perfect for getting rid of old finishes and rust from metal surfaces for repainting. However, you must do it correctly to get the perfect results. It's not uncommon for first-timers to make blunders that can affect the sandblasting results. Therefore, you will need all the tips and tricks to get the most out of your sandblasting project. Below are some guidelines you will find useful.
Use The Correct Blasting Media
Every surface is unique. Some surfaces can handle more abrasive media better than others. Therefore, it's critical that you select the correct blasting media depending on the surface you're working on. For instance, metal surfaces will likely handle more abrasive media better than softer surfaces like wood. Your choice of blasting media also depends on your application. Take painting or finishing, for example. If you want to paint your sandblasted surface, it would be best to roughen it up during sandblasting for your paint or finish to have a proper bond. For such applications, sharped-edged media like crushed glass will work best to cut through the material and leave the perfect profile for your finish or paint to adhere properly. Therefore, assess your needs to select the right blasting media.
When choosing the blasting media, focus on the shape, hardness, and density.
Prep The Surface Before Blasting
Surface preparation is critical before sandblasting. Ensure the surface is free of any surface contamination like dirt, grease, oil, tapes, stickers, etc. Doing this prevents you from wasting the abrasive (blasting media) when sandblasting. In addition, if you don't prepare the surface properly and wish to paint the surface afterwards, the contaminants can affect adhesion.
Use The Right Blaster
Sandblasting units come in different sizes to suit different applications. Generally, smaller units are less powerful but less expensive. On the other hand, their larger and more expensive counterparts have more sandblasting power or capacity. Typically, smaller units will take longer to complete the job, especially if you have a relatively large project. Therefore, assess your project needs first to guide you on the ideal sandblasting unit. For instance, a medium-sized sandblaster will probably be enough for most small DIY tasks at home.
Don't Overlook Your Air Supply
Your air supply plays a critical role in your sandblasting performance. You need cool and dry air free from oils for the best results. Moisture condensation, blockages, and sandblasting media aggregation and contamination are some issues that may result from a damp and contaminated air supply.
For more information on sandblasting, contact a professional near you.Share