Are you sure you have the Bowden-tube heatsink? There are two versions of it. Sounds like you've received the non threaded one (meant for direct drive).dsnijders wrote:I gave up on the E3D hot end. Reasons:
- plastic coupler does not fit in heatsink.
- bowden tube fitting in heatsink is far too loose, which results in filament not being pushed into hot end (tolerance issue).
I am very disappointed, also because Sanjay from E3D never responded to my emails.
I switched back to the hot end from Guillaume.
Mine is really snug. The tube itself fits easily in the fitting and does not pop out. You have to push the tube into the fitting, and than pull the upper lip up (while pushing the tube down). This way there's no play.