@hazardwarning Ah. I have some syringes, but I’ve never actually bothered refilling cartridges. The Carbon pens now have a strange little bit of plastic. I’m trying to work out what it is for.

@hazardwarning Ah. I have some syringes, but I’ve never actually bothered refilling cartridges.

The Carbon pens now have a strange little bit of plastic. I’m trying to work out what it is for.