Cannabis smoking tubes: the short answer
A cannabis smoking tube is a hollow cylinder that holds ground flower for a draw. Smoke moves through the bore to the mouth. The term covers four products: pre-rolled paper cones, glass one-hitters, metal tubes called bats, and tube-shaped pipes in wood or stone. Load size and burn time differ by type. A paper cone holds 0.3 g to 1 g and burns over several minutes. A one-hitter holds 0.1 g to 0.25 g and empties in one to three draws.
How to Fill Cannabis Hand-Rolled Cones: A Step-by-Step Guide
Types and sizes
Pre-rolled paper cones
Paper cones arrive empty and pre-shaped. Sizes run from 70 mm to 110 mm. A 70 mm cone holds about 0.3 g of ground flower. A 98 mm cone holds about 0.75 g. A 110 mm cone holds about 1 g. The paper burns with the flower, so the paper adds to the smoke. Unbleached hemp paper and rice paper are the two common wraps.
Glass one-hitters
A glass one-hitter is a straight tube with a narrow bowl at the tip. Lengths run 60 mm to 90 mm. Glass does not burn, so the smoke comes from the flower alone. The bore cools the smoke before it reaches the mouth. Colored borosilicate glass holds up to heat better than soft glass.
Metal tubes
Metal bats work like glass one-hitters. Aluminum and stainless steel are the standard metals. Metal heats faster than glass and stays hot for several draws. A metal tube with a screen at the tip keeps ash out of the mouth.
Wood and stone tubes
Wood and stone tubes act as a pipe with a straight stem. They weigh more than glass or metal. Wood chars at the bowl over time. Stone resists heat but cracks when dropped.
How to pack a tube
- Grind the flower to a coarse cut. A fine powder clogs the bore.
- Dry the flower to about 55 to 62 percent relative humidity. Wet flower plugs the draw.
- Fill the tube in small pinches. Press with light force.
- Leave 2 mm of space at the tip so the flower can pull air.
- Test the draw before you light. Air should move with light resistance.
A tube packed too tight burns hot and pulls hard. A tube packed too loose burns fast and pulls ash into the mouth.
Cleaning
Resin builds up in the bore and narrows the draw. Glass and metal tubes clean with 91 percent isopropyl alcohol and coarse salt. Soak for 20 to 30 minutes, shake, then rinse with warm water. Let the part dry for 24 hours before the next use. Wood tubes take a pipe cleaner and a scrape, not a soak. Water swells wood and splits the stem.
What to check before you buy
- Bore size: 6 mm to 10 mm fits most flower cuts.
- Material: glass and stainless steel hold no resin odor.
- Load volume: match the tube to your session length.
- Screens: a set of 5 screens costs less than a new tube.
- Storage: a capped tube keeps smell in and moisture out.
Legal notes for US buyers
Federal law treats cannabis with more than 0.3 percent THC by dry weight as marijuana. Hemp flower sits under that limit. State rules on possession, sale, and public use differ, and some states ban smoking devices by mail. Check your state code before you order. Device laws and cannabis laws are separate.
CBD flower in a smoking tube
Hemp flower works in any tube listed above. Grind it the same way. Smoke from hemp flower carries the same irritants as smoke from any plant material, so the CDC and the American Lung Association advise against inhaling smoke of any kind. Ask for a batch certificate of analysis before you buy hemp flower. A full panel covers cannabinoid potency, pesticides, heavy metals, residual solvents, and microbes. The FDA has not approved CBD as a dietary supplement and has approved one CBD drug product.