I'm using fancyhdr. My fancy page style has no footer (only footnotes). However, on chapter titles, I am using a plain pagestyle, which has the footnote on the bottom. In any case, I would like to be able to have different bottom margins on each of these page styles - 0.25in for the plain pagestyle, and 0.15in for the fancy page style. How do you accomplish this?
\documentclass{book}
\usepackage{fancyhdr}
\usepackage[includeheadfoot,top=0.25in,bottom=0.1in,left=0.75in,right=0.4in,paperwidth=6in,paperheight=9in]{geometry}
\usepackage{blindtext}
\fancyhf{}
\fancyhead[RE,RO]{Right}
\fancyhead[LE,LO]{Left}
\begin{document}
\chapter{My Chapter}
\blindtext[3]
\blindtext[3]
\blindtext[3]
\blindtext[3]
\end{document}