Pre-pressing herb material prior to rosin extraction provides multiple benefits to extractors. Pre-pressing is a simple and effective way to prepare flower, dry sift, or bubble within a filter bag to create consistent and even rosin flow from the material during extraction.
How to use pre press molds?
The process of pre-pressing herb is straightforward. Using specially-designed rectangular aluminum molds (or cylindrical molds if you’re pressing Bottle Tech), loaded filter bags are hand-pressed within a mold just before extraction. After the filter bag is filled with material, use your fingers to compact the material inside the bag tightly and evenly.
The shape and size of the pre-press mold you use should match the general shape and size of the filter bags. The bag should fit completely within the edges of the pre-press mold.
Once the filter bag is positioned inside the pre-press mold, a common technique is to place your palms flat on the top of the mold and use your upper body weight to firmly press the material.
You can even place one side of the mold onto your heated rosin plates for a minute or two before pre-pressing the material. This additional heat from the pre-press mold helps to prime the material for extraction.
There are many pre press mold brands available in the market. Here we are listing top 3 kind of best pre press mold from ECO Farm and based on user reviews as given below:
ECO Farm 2"x4" Pure Rosin Pre Press Molds for Diy Solventless Extraction Pressing

- High Quality Material: ECO Farm pre press mold made of high-quality aluminum, very hard and durable. It is handled by anodizing, looks very beautiful.
- Great Design: Durable 3 piece design, precision machined from solid aluminum blocks, and easily put in and out.
- Simple to Use: It is very portable to carry out and a great choice for diy solventless extraction pressing.
ECO Farm Pre Press Mold 2x4 With High Quality Material Tool Set

Pre-Press Mold 2x4'’ Pressing Mold
High Quality Material: All of our Pre Press Mold made of high quality aluminum, sturdy and durable, and easy put in and out.
Premium Workmanship: Hard anodized surface for durability and easy maintenance, nice appearance
Works perfect: it presses your flower with ease, create 7 -14g one time
ECO Farm Pre Press Mold 5cm*10cm/ 6*12cm/10*15cm Extraction Aluminum Mold

High quality: All of our molds made of high-quality stainless steel
Very well made and it presses your flower with ease
This pre press mold is anodized into a silver color for getting a smooth surface
Works perfect, and various sizes in stocks to option: 5cm*10cm/ 6*12cm/ 10*15cm
Presses your flower with ease
Color: Random Color (silver or gold)
conclusion:
Pre-press molds provide a quick and easy way to prepare your medicinal plants material for extraction. They help pack flowers within the filter bag much more efficiently than is possible just using your hands.
You could choose the right pre-press molds depending on which size bags you’re using.
If you are Looking for more options and information? Welcome to visit our official website. Get a 16% discount code after placing your order, the discount code is Summer16.
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