After the last two days of cleaning the brush was supple enough to use again so I did my 100 square feet of housepainting on the second story (split level, 3 two story sides)from the extension ladder yesterday afternoon.
Sure, 30 years ago i would have done 1000 square feet or so in a day but this is not 30 years ago. :-)
That I have only been doing an average of 100 square feet a day is the reason i have not been washing the brush out everyday but looking for ways to keep it from day to day and washing it maybe once a week...or two. And that is how I ended up with dried paint in the bristles. I got enough out in the past two days, including the fingernail bit someone suggested to go with it yesterday.
The brush, complete with it's 6 oz of paint, overnighted, well wrapped, in the freezer. I put it in just after I had finished my painting yesterday afternoon.
Another day, another 100 square feet, maybe 200!, this afternoon. Weather is beautiful for this I started my other soon-to-be-sold house in late june and just the front split-level face over there lasted through July. All but the face of that house is well shaded and the rest does not need paint nor is the new paint on the face, which bakes in the sun daily, obviously different from the rest.
Same situation over here except since this house has not been fully painted in 11 years other than area touch-up and front trim and painting the chimney chase twice and I am doing the whole thing.
FACE