I got some really discounted rosin and I was looking to convert a gram or two of it into cartridges. I’ve been reading that most people use a glass syringe to fill them but I was reading another thread that you just go to your local pharmacy and get a normal plastic syringe. Anybody have any advice or experience?


For fountain pen cartridge refills I got what are called blunt syringes. Like a syringe but the tip isn’t sharp at all. I imagine you want the same thing.
https://www.gouletpens.com/products/goulet-5ml-ink-syringes?srsltid=AfmBOorltdLg4MwPC_vSXtjWqoQJUKZJt-h6VnHPHmEoU34w2c97XLTP
Why a glass syringe and not a normal plastic one?
I was thinking glass because of the warm/hot liquid that would be inside of it but these could work