I've see a number of emergency needs asking for cartos so I thought this might help. I use 510 cartos with the end cap, plug and filler. If you happen to have these, or ones similar, here's a simple way to keep them running (better actually) once the draw gets hard or they start to taste bad. It's also a nice way to use prefilled ones that taste bad from the start when cleaning them doesn't help.
Remove the end cap and plug. Pull out the filling with tweezers. Inside is a wick and a cylinder that surrounds it. These need to stay. Rinse and blow out if you'd like. Add to 10 to 15 drops on the outer edge and you're good to go.
If the cylinder comes out with the filling just take a scissors and cut it lengthwise. With a pair of tweezers, grasp the edge opposite the cut you made. Slip the cylinder over the wick. You're done.
Remove the end cap and plug. Pull out the filling with tweezers. Inside is a wick and a cylinder that surrounds it. These need to stay. Rinse and blow out if you'd like. Add to 10 to 15 drops on the outer edge and you're good to go.
If the cylinder comes out with the filling just take a scissors and cut it lengthwise. With a pair of tweezers, grasp the edge opposite the cut you made. Slip the cylinder over the wick. You're done.