Building your own hydraulic rosin press, You will save a lot of money. That's the reason I got into squishing rosin to begin with. Doing bubble hash and sift is fun but it takes time and is a lot of work. Squishing buds into rosin is quick and very effective. Not to mention, no solvents. This is a big part of why we love rosin so much. My squish with medical cannabis cost $13/gr for rosin when buying ounces of flower at a time at $90. To buy rosin from the caregiver, it is $35/gr on the cheap end. Nearly 1/3 the price to squish your own medicine with a DIY rosin press. I would assume you could easily pay for the unit over the course of 16 grams of squished flowers vs buying rosin outright. I am preheating about 30 mins, I think it helps to insure the plates are fully saturated. Also, it seems the PID is more accurate than I thought, it reads nearly spot on, maybe 2-3 F off in either direction depending where you check the temperature on the plates. Saves Money To Build Your Own We have to pay more freight charge for a heavy hydraulic press. It is much cheaper to buy it in local store. It is easy to maintain it; you needn't spend more time to get support. I recommend building hydraulic rosin press with dabpress anodized rosin cube kit dp-rp37.