How to make aluminum iPhone 6S back cover?

Now, more and more company would like to choose metal back cover for their new device. The metal back cover not only brings much better touch feel but also is more durable. But how turn the whole piece of aluminum into a metal back cover? Not like the elegance process of the Ads in fact, it’s a complicated and full of the noise from machine.

Step 1. Prepare the material

For the reason that the hardness and strength of aluminum are a little weak, so the factory will add some other heavy metal as required.

Step 2. Melt aluminum

Step 3. Casting

Step 4. Cut the original model and send to next step

Step 5. Anodizing or painting

Anodizing will give you the cold metal feel just like iPhone 6S back cover while painting will bring warm coat for the phone.

Step 6. Machining to remove the spare parts

Step 7. Polishing and painting

Step 8. Baking paint

Actually, every back cover will go through five times painting, five times baking and twice polishing.

Step 9. Opening pores

Step 10. Diamond cutting

For getting a perfect metal back cover, many of the steps need to do times and times.