9 Aug 2023 
Mirror buffing is a multi-step polishing process that creates a smooth and reflective surface on a zinc casting.
It much more cost effective and efficient to mirror buff zinc than aluminum.
Mirror buffing aluminum is a slower, more labor intensive process. If the polisher goes too fast, the aluminum will get too hot and line defects will appear.
There are two reasons to mirror buff zinc castings: looks and performance.
Mirror buff polishing creates a shiny surface on the zinc casting, enhancing its aesthetics. This makes the casting more visually appealing and can add value to the finished product.
For example, we mirror buff fire truck sirens to match the look of the fire engine.
A smooth and polished surface reduces friction and is less prone to corrosion and wear. This can improve the casting’s performance and extend the life span of the casting.
A mirror polish is difficult to achieve. It requires a considerably skilled professional, lots of time and heavy labor. Therefore, mirror buffing is expensive and uncommon.
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