if you need more than the heat and pressure of a thumb pressing the dry sifted resin into your palm to form into a solid form, then there's too much contaminant in with the resin. Form a bowl shape with your left hand, pour in about two spoonfuls of resin then use your right hand thumb to repeatedly press down firmly you twist the powder into a putty.
As suggested above, I'd re-sift the unpressed resin to remove as much of the broken leaves and other contaminant as possible, then press it if that's what you want. The purer the dry sifted resin, the greater the impact and quality of the high, so purifying it is definitely worth it. Also keep in mind it's a lot easier to not let the contaminant in with the resin in the first place than try to remove it later.
But what is the advantage of pressing sift into hash? Mostly it was done for commercial reasons, packaging, transporting and to help prevent the loose resin from getting exposed to air and light etc...but does pressing improve the high? Does pressing burn better? No, not really, so for someone who grows their own, makes dry sift, smokes it themselves and doesn't sell it then there's not much point turning dry sifted resin into hashish, I'd suggest keeping the loose resin sealed in a glass jar. Unpressed sift is much easier to sprinkle on a joint, the only advantage to pressing is that you won't lose it all if the sift spills on the carpet, if that happens to a piece of hash, you just pick it again.
Wrapping loose resin in cellophane or parchment paper so it's about 1/4" thick and about 2" x 2" then placing one package in each shoe (place the packages inside the shoes above the heel area then go for a walk, you might need to stop and adjust the packages at first, but after a minute or so you will forget about it...after even as little as 10 minutes walking, the formally dry, sandy, yellow sift will be transformed into pitch black, pliable hash, though sift with a high % of contaminant will probably benefit from a longer walk.
The wine bottle pressing method is not that practical (hot water, glass bottles, pressure, gloves !), any pressure applied with or without heat with form a solid (depending on the % of resin heads to non-active rubbish)
It's just as easy to place the resin in a warm place until it becomes warm then press it, there's no need to apply tons of pressure and extreme heat (unless you are pressing highly contaminated sift like most commercial hashes from traditional hash making countries.
Last edited by Fermented; 02-14-2019 at 10:12 AM..