BeerMonster,
No worries, the devil is in the details right? Any way it wasn't that obvious or this thread wouldn't have gotten this long.
Anyway, there are a couple of reasons people might be able to reduce their boil volume without reducing their IBU's. Remember it all has to do with that boil gravity so if there are more sugars in that wort than there will be less IBU's. So if someone reduced their boil volume if they also reduce their efficiency (which means less sugar in the wort) then that won't move the IBU's all that much. More than likely though, if someone reduces their boil volume and are still able to maintain the same IBU's, for a partial mash or extract brew, it probably has something to do with them adding less extract for the duration of the boil and more at the end (like Palmer suggests).
But to answer your question more directly, anybody who has the recipe entered just as you do should not be able to reduce their volume without reducing their IBU's they, must be doing something different than you
Also, BeerSmith will allow you to add the second can at the end of the boil. If, when in your recipe view, you double click on the the second can of extract a (dialogue?) box will open with several things in it. A little more than half way down you'll notice the properties section of the box. You have two options there that can be useful here. The "Late Extract Boil For" check box and the "Add After Boil" check box. Either one will add the extract later in the process. I would suggest using the "late Extract Boil For" box and enter a value of 1 minute. If you use the "Add After Boil" box your brewsheet will have you add the extract after you've cooled the wort which of course is not what you want. If you use the Late Extract Boil For check box you can add 1 minute and your brewsheet will have you put the extract in with about a minute left in the boil with a minimal influence on your IBU's.
Hope this helps, and good luck!
No worries, the devil is in the details right? Any way it wasn't that obvious or this thread wouldn't have gotten this long.
Anyway, there are a couple of reasons people might be able to reduce their boil volume without reducing their IBU's. Remember it all has to do with that boil gravity so if there are more sugars in that wort than there will be less IBU's. So if someone reduced their boil volume if they also reduce their efficiency (which means less sugar in the wort) then that won't move the IBU's all that much. More than likely though, if someone reduces their boil volume and are still able to maintain the same IBU's, for a partial mash or extract brew, it probably has something to do with them adding less extract for the duration of the boil and more at the end (like Palmer suggests).
But to answer your question more directly, anybody who has the recipe entered just as you do should not be able to reduce their volume without reducing their IBU's they, must be doing something different than you
Also, BeerSmith will allow you to add the second can at the end of the boil. If, when in your recipe view, you double click on the the second can of extract a (dialogue?) box will open with several things in it. A little more than half way down you'll notice the properties section of the box. You have two options there that can be useful here. The "Late Extract Boil For" check box and the "Add After Boil" check box. Either one will add the extract later in the process. I would suggest using the "late Extract Boil For" box and enter a value of 1 minute. If you use the "Add After Boil" box your brewsheet will have you add the extract after you've cooled the wort which of course is not what you want. If you use the Late Extract Boil For check box you can add 1 minute and your brewsheet will have you put the extract in with about a minute left in the boil with a minimal influence on your IBU's.
Hope this helps, and good luck!