Originally Posted by gljurczyk
It's a filter that will stop any big debris from entering the system, you really never have to do anything to it. By the way how did you draw that circle, what do you use for a computer a Surface Pro2 or do you have a touch screen computer?
I use a basic good 'ol desktop, Win 7. Circle was drawn in Photoshop. A long way to go just to draw a circle but I do graphics and multimedia and that was quick and easy on my comp. For the average Joe try using Windows Paint. It's on every Windows comp under accessories.