This article will show you how to make your own microphone pop-filter. A pop-filter is a small screen that goes between a microphone and your mouth to prevent sharp popping sounds (known as plosives) like “P” and “B” words from overloading the mic level and distorting. Commercially available pop-filters are expensive and can often cost 20 dollars or more. The pop-filter you can build here will cost less than $6 dollars. Link.
HOW TO Make Your Own $6 Microphone Pop-Filter