Quote Originally Posted by GeorgeD View Post
Hah,thats better,how about like this?
Except thats a tool changer so has very few fixed positions. That one doesnt use a friction brake but a rigid locating pin. A true rotary 4th axis needs positive low-backlash locking such as a worm drive. Like this conversion (similar to mine) using the rotary controller documented elsewehre on this forum....