This is how I do it: What you need: A big paper tissue, ink bottle, pen, a sheet of paper. Step 1: Make sure that your bottle's bore/lip is clean. Dip your pe

This is how I do it: What you need: A big paper tissue, ink bottle, pen, a sheet of paper. Step 1: Make sure that your bottle's bore/lip is clean. Dip your pen just enough to cover feed, plus a little of the section (grip). Twist to empty, twist to fill. If there's too much air, repeat a couple times. Step 2: Raise your pen, but do not remove from the bottle. Twist your piston to drip 4-5 drops of ink back to bottle. This is the amount which saturates your feed. Twist to fill in air, to suck some air, and the excess ink in the feed. Step 3: Wait a couple of seconds to wait for any other drip, remove your pen from the bottle, wipe the feed, sides of the nib and section. Re-wipe with a damp cloth if you wish. Scribble a little on your paper, you're done. Be careful while wiping the feed in step 3. There'll be some ink and it may transfer from your tissue to your finger. If your pen dries very quickly, it might not be good sealer and may need frequent use to ensure to use all the ink inside before drying out. If you can share the make/model, I might be able to point to you to right way. For me, A Lamy cartridge (or a converter fitted Lamy) lasts around two weeks if I use it every day, even more if I don't. I generally refill my pens when the ink drops below a certain level since more air means faster dry out inside the pen, and make it more prone to "burping". Enjoy your ink and pen.