Hi all, I've just started building a Prusa i2 but I'm a little stuck on the z-axis couplings. The printed pieces that screw together are just too loose on the motor shaft. How do I secure them? Do I line them with some sort of tubing, or should I source some metal couplings? Thanks, Pretengineer https://reprap.org/forum/read.php?4,189232,189232#msg-189232 Sat, 08 Aug 2026 11:26:27 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,189232,189798#msg-189798 https://reprap.org/forum/read.php?4,189232,189798#msg-189798
@xclusive585: I don't think vinyl is used much as a term in Ireland, I also asked for pvc under the assumption that it was the same thing but no joy.

Thanks for the advice.]]> Pretengineer Reprappers Tue, 05 Mar 2013 09:55:22 -0500 https://reprap.org/forum/read.php?4,189232,189666#msg-189666 https://reprap.org/forum/read.php?4,189232,189666#msg-189666 DRepBRo Reprappers Mon, 04 Mar 2013 19:10:43 -0500 https://reprap.org/forum/read.php?4,189232,189533#msg-189533 https://reprap.org/forum/read.php?4,189232,189533#msg-189533 -------------------------------------------------------
> I use aquarium tubing, ID 4 OD 6mm.


+1. Go to a pet shop if you can't find it elsewhere.

(also, what kind of hardware shop doesn't know what vinyl tubing is!? They should have it, though in sizes too big for what we need.)]]> xclusive585 Reprappers Mon, 04 Mar 2013 11:24:58 -0500 https://reprap.org/forum/read.php?4,189232,189507#msg-189507 https://reprap.org/forum/read.php?4,189232,189507#msg-189507 jbernardis Reprappers Mon, 04 Mar 2013 10:12:32 -0500 https://reprap.org/forum/read.php?4,189232,189422#msg-189422 https://reprap.org/forum/read.php?4,189232,189422#msg-189422
Plastic tubing is better, but rubber bands might do in the meantime]]> David2 Reprappers Mon, 04 Mar 2013 04:51:31 -0500 https://reprap.org/forum/read.php?4,189232,189337#msg-189337 https://reprap.org/forum/read.php?4,189232,189337#msg-189337 nophead Reprappers Sun, 03 Mar 2013 18:58:17 -0500 https://reprap.org/forum/read.php?4,189232,189322#msg-189322 https://reprap.org/forum/read.php?4,189232,189322#msg-189322 KDog Reprappers Sun, 03 Mar 2013 17:41:46 -0500 https://reprap.org/forum/read.php?4,189232,189277#msg-189277 https://reprap.org/forum/read.php?4,189232,189277#msg-189277
Is there a particular type of tubing to get? I asked a in a plumbing shop about the vinyl tubing mentioned in the parts list but they had no idea what I was talking about.]]> Pretengineer Reprappers Sun, 03 Mar 2013 15:13:39 -0500 https://reprap.org/forum/read.php?4,189232,189254#msg-189254 https://reprap.org/forum/read.php?4,189232,189254#msg-189254 hydraraptor.blogspot.co.uk]]]> nophead Reprappers Sun, 03 Mar 2013 13:32:21 -0500 https://reprap.org/forum/read.php?4,189232,189236#msg-189236 https://reprap.org/forum/read.php?4,189232,189236#msg-189236 Spk64 Reprappers Sun, 03 Mar 2013 12:35:38 -0500 https://reprap.org/forum/read.php?4,189232,189232#msg-189232 https://reprap.org/forum/read.php?4,189232,189232#msg-189232
I've just started building a Prusa i2 but I'm a little stuck on the z-axis couplings. The printed pieces that screw together are just too loose on the motor shaft. How do I secure them? Do I line them with some sort of tubing, or should I source some metal couplings?

Thanks,
Pretengineer]]> Pretengineer Reprappers Sun, 03 Mar 2013 12:23:53 -0500