There are a lot of misinformed people in this thread. First of all, sugar leaves (heavily tricomed trim) can make awesome shatter. What really matters is the temperature at which you purge, how much you agitate the oil when scraping it up, and the ratio of cannabinoids in the weed.
1. For shatter, you need the least amount of heat possible, and purge it for days and days. To start you can just heat purge, but oil in medical states is vacuum purged in a vac chamber. One popular method is 100 degrees Fahrenheit for 100 hours. The higher the heat, the less terpines you will have in the finished product (it won't taste as good), and the greater the chance of causing it to wax up.
2. To make the most stable shatter (the least likely to budder up after a few weeks), you don't scrape it, but pour it out of the collection dish before the butane has evaporated. Agitating it by scraping causes nucleation points, and makes it budder up. It might not budder up that day, but it will eventually. A very common method of making honeycomb/budder is to whip it while purging, again to cause the nucleation points needed for buddering up.
3. High ratios of CBD cause the oil to be sappy (sometimes pull and snap consistency). Most weed has a much greater amount of THC in the weed unless it is specifically bred to be high CBD so this is not a big problem. This means that some weed will never be shatter no matter your technique.
Like several people have said, making BHO is very easy, but it is hard to do well. Wanting to make specific consistencies (budder, honeycomb, shatter, pull & snap, etc) requires a lot of experience, and even if you do everything correctly, it might not work out for you. My advice is just to start out just purging properly before even bothering to try to get a specific consistency. Take baby steps before you try to run a marathon.
