well i decided that some folks would enjoy seeing a huge solar furnace heater, it took me about three months to build it last year, i had to take it apart 2 times and yet i was determine to finish it. today i am enjoying free heat when the sun shines, could i redesign it sure you can always improve a project, am i glad i did it?... yes very much so , even after all the headaches, i guess my point is dont give up, if you have an idea that your not sure if its going to work or not do it anyway, i was ready to tear it apart from the smell of the pine boards, but decided i was going to give it another year and its not as bad this year , i can live with it, and it seems to be less all the time, but i would never have known if this was going to work or not, and it did, as well as i thought ? yes, am i disappointed ? no, so keep going, youll learn some lessons along the way, keep warm lol arleen