Step 1: Supplies
-a pen with a fiber tip
-a pen tube with a hole in it
-compressed air/gas duster
The 10oz duster is a little big to fit in a pocket, but I have seen little air dusters at staples that would fit perfectly into a pocket.
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.