I use dry sift or bubble hash with the volcano somewhat frequently. I use Japanese cotton pads and rip up a small amount to cover the screen of the volcano bowl in a little layer of cotton wool. Then I rip up the hash into little pieces and spread it out over the cotton. Then I take another piece of cotton wool and place it on top, so that the hash is sandwiched between two pieces of cotton wool. I then fill one balloon at max temperature, and right after filling this ballon (yields somewhat wispy but tasty vapor), I open up the bowl, take out the cotton hash sandwich, and pull on it a bit from all sides to stretch out the cotton. This then spreads the hash apart, exposing even more surface area. I then shove the cotton hash sandwich back into the bowl, making sure it fits in nicely. This next balloon will be crazy dense, and that's where I find the best vapor is.
I then just keep repeating the process, every time after filling up a balloon, pulling apart the hash a bit. At a certain point, the hash will kind of just turn into powder and start falling out of the cotton, and that's where I stop my session. I really like vaping hash like this, and this same method seems to work with a lot of different vaporisers.