I found that I was irritated by the extra space after periods in my document, so I turned it off using
\frenchspacing. However, I was surprised to find I missed the space a little. Without
\frenchspacing my sentences are too far apart, but with it they feel a little bit cramped.
So, heretical as it may be, I would like to include a little extra space after a period, but not as much as the default. If possible, I'd like to be able to set a maximum, e.g. so that no matter how much it stretches, it can never be more than 1.5 times wider than a normal space. How can I achieve this?