Well... as stronger the weed, stronger the hash oil. Note that the hash oil is FAR more potent than the weed you use to make it... so, in the first time you were smoke it, smoke a very small amount, or you will be completly absolutely amazingly HIGHH :stoned:
And the hash oil is not exactly solid... it resembles honey... when i say a "ball" of hash oil, i mean rather a drop of it, as it is something between liquid and solid... and it is EXTREMELY sticky, so it sticks to EVERYTHING. I store it in a small plastic container used to store pills, and i use a needle to get the amount i will smoke.
BTW... i would say its impossible to smoke all the hash oil made with 3.5g of weed... you would pass out before finishing it... try to start with a small ball with some 2-3mm of diameter... then smoke more, if it were not enough.