Where can I buy the plastic tube for the filament?
I want the same type that was included in my Mendel90 kit from Nopehead.
I have bought a few from Ebay, but they have not been as good.
I can not find the right tube on Ooznest.co.uk.
The one they have is thicker and the inner diameter seems strange as it is specified as 3-4 mm. 3-4 mm?! Not precision manufacturing.