View Full Version : Adapt Advanced Rotator top to accept 3/8 inch male thread

01-20-2014, 08:28 AM
I am consider buying the advanced rotater but I am not using the nodal ninji arms. I already have a sizeable investment in Acratech leveling plates, ball head, nodal rail and right angle arm. I would like to place the advanced rotater on top the leveling plate and below the ball head. The leveling plate has a 3/8 male thread on top which would then screw into the bottom of advanced rotater which had a 3/8 thread. Then I would like to screw my Acratech ball head on to the top of the advanced rotater. The issue is the the thread on the rotater is a M6 thread which is close to a 1/4 inch thread.

One thought I had was to drill our the M6 thread on the top of the rotater and retap it with a 3/8 thread. There are two problems that I see with this. 1) the M6 thread is only 1/2 deep and after drilling the tap would be placed in hole and because the tap is tapered, I wouldn't be able to get a good thread deep enough. 2) Drilling and tapping would probably put shavings down inside the rotater and damage the bearings.

I was wondering if the head could be partially disassembled to drill and tap the hole and put back together again?

Any thoughts or solutions would be greatly appreciated.



01-20-2014, 11:05 AM
Hi Rick and welcome to the forum,

You can easily solve the problem by using the M6 to 3/8" Adapter. Be sure to set the concave side of the ring to the rotator. That way it will keep the screw in it's place.


Then you can go on with 3/8" thread on top of the RD16II. Be sure it will keep the weight of your ball head. Normally we do not like to use a ball head on top. Be aware, that it may cause problems with outstanding parts and you have to mask a lot. But just test it.

Feel free to ask,

01-21-2014, 05:41 AM
This would be great. Thanks for your help.


nick fan
01-21-2014, 07:14 AM
I can't imagine the benefits of putting a ball head on RD16. What is the point? You have a leveling base at the bottom already. The ball head will only cause misalignment and exert more torque on the leveling base. The overall torque may be 2-3 times of normal configuration that the leveling base is intended to be used.