this process took me two hours but this takes moments to explain. There are two possible ways to fill your markers. You could use the needle method to fill but this is not the way I do it.
First step – gather supplies.
Second step – take off both caps
Third step – take the chisel nib out
Fourth step – weight markers to see how much ink they need
Anything below that and you might as well fill them up while you have it out.
Fifth step – drip ink from the correct refill (and yes check to make sure cause you don’t wanna deal with the consequences of filling it with the wrong color).
Try not to over fill cause it drops out the other end if you do. It’s slightly messy and might stain stuff (it’s why I do everything over paper towel). Don’t worry to much if you over fill. You can bleed off extra (it’ll just expensive and expensive and did I say expensive).
If you drip on something try removing it with rubbing alcohol and hand sanitizer. Dark colors, red, and orange can be trickier.
Make sure to clean your nib removal tool (tweezers) between markers. Transfer isn’t hard to bleed off (like filling with wrong color) but you might not realize you need to correct it until you’ve ruined some bit of art you’re working on.
Good luck and have fun filling. (Oh and you might wanna have a book on tape or some music cause the more markers you have the longer this will take)