Das Filter Blog
How to Fill a Pre-Rolled Cone So It Burns Evenly
Quick answer: Grind your flower to a medium, fluffy texture. Drop it into the open end of the cone a pinch at a time. After each pinch, tap the tip end on the table and press the flower down lightly with a packing stick or pen. Keep going until it's a few millimeters from the top, then twist the extra paper closed. Even, light layers are what make it burn evenly.
A pre-rolled cone already has the shape and the tip, so filling it is the whole job. Most cone problems, like runs, hard draws and a joint that goes out, come from filling it too tight, too loose or unevenly.
What you need
| Item | Why |
|---|---|
| A pre-rolled cone | 1 1/4 for one person, king size for sharing. See the pre-rolled cones guide for sizes. |
| Ground flower | Medium grind, stems and seeds picked out. For amounts by size, see the paper and cone size calculator. |
| A packing stick, pen or chopstick | To press each layer down |
| A folded card or piece of paper | A simple funnel, optional |
| A tray or mat | To catch what spills |
Step 1: Grind medium
Aim for small, even, fluffy pieces, not powder. Powder packs into a dense plug that's hard to pull air through. Big chunks leave gaps that burn faster than the rest. Pick out stems and seeds; a sharp stem can poke through the paper.
Step 2: Open the cone
Look into the open end and check the paper isn't creased shut. If it is, open it gently with your packing stick. Hold the cone near the tip, not by the wide end, so you don't squash it.
Step 3: Add flower a pinch at a time
Drop in a small pinch. A card folded into a V makes this easier: put the flower on the card and tip it into the cone. Don't fill the whole cone at once and pack it from the top. That leaves the bottom loose and the top hard.
Step 4: Tap and press after each pinch
Tap the tip end lightly on the table a few times so the flower settles. Then press it down gently with the stick. Firm enough that it holds, light enough that it springs back a little. Repeat steps 3 and 4 until the cone is nearly full.
Pay attention to the narrow end near the tip. It's easy to leave it loose, and that's where a cone often canoes or goes out.
Step 5: Leave room and close it
Stop a few millimeters below the top. Give it one last light press, then twist the empty paper at the top closed. If the cone has a lot of extra paper, you can fold it over instead of twisting.
Step 6: Check the draw
Before you light it, draw through the tip unlit. You should feel air moving without much effort. If it's tight, roll the cone gently between your thumb and fingers to loosen it. If it's very loose, open the top and add another pinch.
Then light it while turning, as in how to light a joint.
Common problems
| Problem | Likely cause | Fix |
|---|---|---|
| Hard to draw | Packed too tight or ground too fine | Roll it gently to loosen it; next time grind coarser and press lighter |
| Burns down one side | Uneven packing | Fill in smaller layers; see why does my joint canoe |
| Keeps going out | Packed too loose near the tip, or damp flower | Press the narrow end a little firmer; keep flower dry |
| Paper tore | Stick pushed too hard, or a stem | Press gently and pick out stems |
| Flower falling out the top | Not enough paper left to close | Leave a little more space before twisting |
Paper cones vs banana leaf cones
Banana leaf cones fill the same way, but the leaf is stiffer and can crack if you press hard. Our guide on how to pack a banana leaf cone covers the differences, and banana leaf vs paper cones compares the two. If you'd rather make your own cone from a paper, see how to roll a cone.
If you want to try a leaf cone, our 6 Nanner Barrels are a small pack to start with.
Frequently asked questions
How do you fill a pre-rolled cone?
Grind your flower medium, then drop it into the open end a pinch at a time. After each pinch, tap the tip end on the table and press the flower down lightly with a packing stick or pen. Stop a few millimeters from the top, then twist the paper closed.
How much goes in a cone?
Roughly 0.5 to 0.75 grams for a 1 1/4 cone and about a gram for a king size cone. It depends on the brand, your grind and how firmly you pack.
What can I use instead of a packing stick?
Anything thin, clean and blunt: a pen, a chopstick, a clean straw or the handle of a small spoon. Some brands include a packing stick in the box.
Why won't my cone draw?
It's usually packed too tight, or the grind is too fine. Roll the cone gently between your fingers to loosen it. If that doesn't work, empty it and refill with a slightly coarser grind and lighter presses.
Do I need a cone filler?
No. Cone filler machines are made for filling many cones at once. For a few cones, your fingers, a folded card and a packing stick are enough.
Products are for adults 21+.
