How do you get those old surface from scratches to super shiny? If you want to enter into the world of metal polishing, you need a little know-how and the right power tools. This article will introduce you to the basic knowledge of metal polishing, including material like aluminum, steel and stainless steel. When you do it right, the results are sure to impress you！
Preparatory work: For those raw extruded or cast metals such as aluminum and stainless steel, grinding is a critical first step in achieving a mirror polishing. You can use wire cup wheel or angle grinder flap disc to remove rust. If you’re using relatively smooth metal, you probably don’t need to sand. Remember that sanding never makes it shinier, but it can save you time and make the surface flatter.
For wet sanding process, start with coarser grains and gradually increase to 1,500-2,000 grains in units of 200 grains. As for hand sanding, wet sandpaper can be sanded more efficiently. Evaluate casting lines or scratches to determine the abrasive size of the sandpaper to begin with. In general, if you can feel the scratches, use P320 sandpaper. It can definitely make a good use of your time. Start with coarse sandpaper and gradually increase to 1500-2000 high grit sandpaper or sanding disc in 200 grit units. This will drastically shorten your polishing time and produce a polishing effect that will satisfy the most discerning people. Click BINIC ABRASIVE, you can find wet sandpaper in various grains and sizes here. Last but not least, try to keep the sandpaper as moist as possible to avoid clogging. This is especially important when you’re polishing aluminum.
Apart from the hand sanding just mentioned, another option for surface preparing – more dynamic than wet grinding – is a grinder, which is sanded with a mold grinder. Since the grinder can be used with a variety of grinding accessories such as rolled surface discs, wire brushes mounting grinding wheels, grinding discs, etc., you can search the BINIC Abrasive to find the abrasive and shape that is right for your work piece.