IPad2 Cover Etching

Measure iPad Cover to create template for laser etching.
Here is what I used for dimensions.

Here was my first attempt.  I ran the laser on low power and numerous times.  Some of the images were not very high resolution.  You can see how the carbon stained the cream cover.

Second attempt after coating a new cover with a leather finisher/protectant. 
Improved the images some and only ran the laser once.
Much less smudging.

Tried it on a black cover without any surface preparation and it seems to work fine. 

I made it at TechShop.
www.TechShop.ws