I've been doing this for 2 decades now to get small amounts of high quality dry resin hashish so fast and simple it's a no brainer. I stumbled onto it myself trying to do something else.
Here's how to do it yourself: Go to a pet store and buy a "birthing cage" for fish. This is where small, new born fish can be safe from bigger fish. It cost 5 dollars. You'll get some plastic for the frame, toss that away! What we are after is the 72 mic bag that was to over the plastic cage. It's not a huge sack, maybe can hold about 3 ozs at a time. The sacks are very durable, mine have lasted for years. Take your shake, dry it very well so the resin comes off nicely, place it in the bag until full, pull the draw string to ensure that no product inside gets out the sack and spoils the hash. Over a nice, clean, dry, smooth non-pores counter-top, I warp the draw-string around my fingers in a way that i've developed for myself. Something like a yo-yo, the bag dangling below my open palm on about 6 inches of string, I begin to softly bounce the bag up and down against my open palm. You are after the smallest crystals, so banging it hard at this point will not serve this purpose. Look at the counter top, see the sweetest golden dust appearing? Make sure there's no air movement when you shake. Do not expect large amounts, but what is produced with this first shake will go up against any bubble hash you've tried/made. Fact.
Now, after you have gotten this first nicest stuff, it's up to you on how far to go now. The harder the shaking, the greener the dust, and, less real crystals worth smoking. I've produced many ozs this way. here's a tip on pressing your dust: Place about a gram in your openpalm, wet a finger on your other hand, mash the dust with the wet finger into your palm causing it to slightly darken, but ready now for the heat. With a cricket lighter, heat the dust in your palm for about 20 seconds, don't burn it by too much. Wet the finger, work the dust into your palm, which should now be forming a nice ball, more heat, more rubbing around in the palm, wet, now it's a piece of hash in smell, appearance, taste, and exhale. Hurry, , , , make some more!
I've never just crushed up real buds to see what the product would be like. Anyone wanna try that and tell us what you got?
Write and tell me how it went, or didn't go. I'll give whatever advice i might.