My Rotring 300 and Sanford Turquoise 2mm lead holders both make a rattling noise if I shake them back and forth when the lead is held in the clutch. If I take the lead out and shake them, they are silent. There must be some part of the mechanism that is securely held when the clutch is fully closed but become free to move when the clutch is extended enough to hold 2mm lead.
Anyone have any idea what's going on here?
Designing a clutch mechanism that rattles when in use seems like a strange decision since it's likely to turn off customers who notice such things.