Where did you buy your threaded rod?(cheapo leadscrew!) - was it straight?

**John S** · 04-06-2009

Lovejoys are resilient type couplings and don't handle misalignment as you have found.

For misalignment you want Oldham couplings, these also have the advantage in they are the narrowest couplings available that work, handy if you are pushed for space or want to build a machine that doesn't look like Princes Charles ears.
.

**korky** · 04-06-2009

Well I've learnt something today!
Here's a link to a flash animation of how an oldham coupling works:
http://http://www.mekanizmalar.com/oldham.shtml

Most impressive.

Keith.