How to properly use rosin filter bags?—Instruction guide details

Rosin filter bags are essential for achieving clean, high-yield solventless extracts. Follow this guide to maximize your results.

What You'll Need:

1. Rosin filter bags (correct micron size for your material)

2. Rosin press machine

3. Your material (flower, hash, kief)

4. Rosin Parchment paper

5. Pre-press mold (optional but recommended)

Step 1: Choose the Right Bag & Micron

              1. Flower: Use 90u to 160u bags. A wider micron (e.g., 160u) gives higher yield; a tighter micron (e.g., 90u) gives cleaner extract.

              2. Hash / Kief: Use 25u to 90u bags. Tighter microns are necessary to contain the finer material.

              3. Bag Size: Match the bag width to your press plate width.

Step 2: Prepare the Bag (Bottletech Style - Recommended)

               1. Fill: Place your material into the flat bag. Do not overfill.

               2. Fold & Form: Gather the open end and twist it gently to form a compact, cylinder-like "bottle" shape. 

                                           The goal is a dense, even pack.

               3. Pre-Press (Optional): Use a pre-press mold to form a perfect puck before placing it in the bag. 

                                                      This improves oil flow.

Step 3: Pressing

               1. Warm Up: Preheat your press to the desired temperature (Flower: 180°F-220°F / Hash: 150°F-180°F).

               2. Position: Place the filled bag between two sheets of parchment paper on the bottom plate.

               3. Press Slowly:

                                       1. Close the plates until they just touch the bag.

                                       2. Apply light pressure for a 15-30 second warm-up (to allow the material to heat through).

                                       3. Gradually increase pressure to full over the next 45-90 seconds. Do not smash too fast!

                                       4. Hold: Maintain full pressure for the remaining time (total press time is typically 1.5 to 3 minutes).

Step 4: Collect & Store

              1. Carefully open the plates.

              2.  Peel the parchment paper away from the bag. Your fresh rosin will be on the parchment.

              3. Collect using a dab tool.

              4. For best flavor and consistency, cure your rosin in an airtight container (like a glass jar).

Pro Tips for Best Results:

✅ Moisture is Key: Your starting material should have a relative humidity of 58-62% for flower.

✅ Don't Overpack: Filling the bag more than ¾ full can restrict flow and reduce yield.

✅ Low & Slow: Lower temperatures and slower pressure typically yield higher quality, terpene-rich rosin.

✅ Bag Orientation: Place the seam of the bag perpendicular to the plates to prevent bursting.

Troubleshooting:

Low Yield? Check material humidity, temperature, pressure, and micron size.

Bag Blowout? You may have overfilled it, applied pressure too fast, or used a micron size too small for the material.

Rosin Too Dark? Press temperature may be too high.

By following these steps, you'll consistently produce clean, flavorful solventless rosin. Happy pressing!