The Directional Flow Method Tutorial

What Are Rosin Bags & How Do You Use Them?

Todde Philips

Todde Philips

🇺🇸 Retired veteran, father, rock-climbing expert & rosin connoisseur 


The Directional Flow Method is a way of folding parchment paper used during pressing in such a way to guide flowing rosin away from the heated plates and onto a cooler surface (the outer edges of the parchment). Here's a quick tutorial on how to do it.



Since cannabinoids and terpenes breakdown when they come in contact with heat, it's vital to direct freshly pressed rosin away from your heat source (the plate). The quicker you can do this, the better. You'll be able to preserve more cannabinoids and terpenes which will give you a richer final product.

Another benefit of the Directional Flow Method is that it allows you to watch the flow during a press. You can see when the flow starts and when it stops, which lets you really dial in the variables specific to your starting material.  



The Directional Flow Method is ideal for runs that generate a high volume of rosin, as a steady stream of rosin allows for this method to be most effective. Therefore, we recommend trying this out with dry sift or bubble hash runs, which will generally produce high enough returns as to benefit from this method.

With flower, the yields normally aren’t high enough to create the river of flowing rosin that you need to make this method work, so it’s best to stick with the basic method of simply folding the parchment paper in half between the plates. Of course, you can still achieve stellar results with the original method.


Step 1: Start with a high quality parchment paper that’s heat resistant, terpene resistant, plus food grade and FDA approved.

Step 2: Fold the parchment in half (along the width of the paper if you’re using a rectangular piece)

Step 3: Place your rosin bag onto the paper about an eighth of an inch above the fold 

Step 4: Fold the two edges upward up to an eight inch away from the edges of the rosin bag

Step 5: Place the bag inside the main fold of the parchment paper and then fold the edges around it

Step 6: You can cut the top layer of the paper away so that only the bottom of the parchment will be hanging down beneath the plates (this gives you better visibility into the flow of rosin as well)

There are several great free videos online that demonstrate the exact folding technique, such as this one.



The Directional Flow Method is an elegant solution to minimizing the time your rosin spends sitting on the heated plates, vaporizing away the beautiful terpenes and cannabinoids that we love. Craftily folding the paper to quickly direct rosin away from the bag, off of the plates, and dripping down the cool surface of parchment is a great way to increase the integrity of your final product. 

Who would have thought a few modest folds could improve your game!

Press on!✌🏽

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