Q: My Rotring 600 tip / replacement tip does not screw back all the way onto the drafting pencil. How can I fix it?
After you unscrew the tip from your Rotring 600 Drafting Pencil, there is an inner lead tube that slides out. A white plastic piece with threads is connected to the lead tube. You will need to screw the replacement tip fully onto the white plastic threads before screwing the tip onto the outside body of your Rotring 600 drafting pencil.