I assume you meant it does not last as long as I think it would. 4 hours isn't bad. I'm excited to try this. I've wasted so much money on so many different things over the past few months that turned out to be useless in the long run. What you've suggested is cheap and I already have the tools (there is organic coffee in my freezer). I will do it within the next couple of days and let you know how it goes. Thanks for the reply - I was very down today and you have offered some inspiration.