This is a compilation of general pressing tips that should help you when first starting pressing with Dulytek heat press machines. Plant Material For the optimal yield and quality, select plant material that has been harvested within 2 to 6 weeks of pressing. Maintain your plant relative humidity at around 62%. Store your herbs in an airtight containers with two-way humidity packs in a dark place. Allow at least 48 hours for the material to reach the optimal humidity level. Open the jars one or two times per day to air them for a few minutes before re-sealing. Grind or...