Search:

I've always assumed it was hang the brush to dry, and then you could store it either way.
Since Brush AD seems to be the only AD I don't have (gotta draw the line somewhere...right?) this is not a...

The hard soap trick I've used (Hat Tip to Glen/Gssixgun et al) is to break it in to chunks. Then run it through a crank type grater, packing each chunk down one layer at a time.
The first few times...