Most regular 510 cartridges from dispensaries come sealed and can’t be refilled. If you want to add your own extract oil, you need a refillable 510 cartridge made for that. These cartridges usually have a mouthpiece you can take off or a small opening to fill the oil.
To fill or refill, carefully unscrew the black mouthpiece. Use a syringe or dropper to slowly add your oil, avoiding the center airflow tube. Don’t overfill, leave some space so the oil won’t overflow when you close the mouthpiece.
Refill small amounts at a time to avoid spills and keep the cartridge working well. If you’re new to refilling, practice with thicker oils and make sure your oil is at room temperature for easier filling.
Tip: Regularly clean the 510 thread connection at the bottom, as it can often get clogged from leakage. This helps prevent clogs and keeps your hits smooth.
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