18 degraas celcius, humidity of 55 % max.
Keep your drying room ventilated !
Do not, I repeat, do not use a oven !! It will destroy your weed !!
To make hasj, dry your weed, put it in a bag, airtight, in the freezer. The longer it is in the freezer, the better. Now, Buy yourself an Isolater-bag, available on the internet.
Put the bag (actually, it are 2 bags) in a 20 -25 liter bucket, as told in the description of the bag, and put in lots of icecold water + about 2 kgs of ice. Put the lid on, make holes in the lid for a mixer and now mix the water. The crystals will fall down to the bothem. Let the water rest for a while and repeat this procedure.
After you squeezed all water out, the hasj will be in the bag.
Now. press your hasj until you have a nice pieces. There's still a lot of water in the hasj, so put it in the freezer for while. All water will come out, you can wipe this of with a piece of kitchen paper.
Enjoy !!
This is just 1 example of making hasj, there are several ways, please use Google to find more.
Important is to freeze your weed or wastematerial you have from cutting so the crystals will come of more easily