Here we go again . . . MK4

[routercnc]

Does the grubscrew for your pulley locate on the actual ballscrew ?
Looked like it might be fixing into your extension.
Regards
Mike.
Thanks for the update

Hi Mike
The grub screws in the hub go direct to the ball screw shaft. The green loctite holding the extension is good stuff but I wouldn't want to rely on it to transmit the drive.

Note to others - if you want to use pulleys ask for longer sections!