I pressed some kief.
Took a piece of parchment paper and folded it up into a square. Unfolded it, dumped my kief that I've collected over the last year or so into it like a pocket and folded it back up. I didn't weigh it so I don't know how much I started with, but the kief catcher in my grinder was basically full.
Took a glass bottle full of very hot water and rolled it on the parchment paper like a rolling pin, flipping the paper over and around every few minutes.
After about 10 or 15 minutes I opened it up, took the melted flattened kief patty and folded it over on itself, closed up the paper, and began squishing/warming it again. Continued this process for about an hour. I changed the water once because it cooled down.
Then after an hour of hand pressing and heating and folding it over on itself, I went out to the garage and put the parchment paper between 2 small wooden boards, and placed this sandwich in my vice. Tightened the vice tight but not too tight and left it like that for 30 minutes.
After I removed it from the vice and opened up the package I was left with a flat round disc of a soft dark hash, approximately 1&3/4" in diameter, maybe 1/16" thick. I broke off a small piece, it smokes pretty good on ash in a pipe, bubbles and melts, tastes good.