The cradle has several functions:
- mechanical fitting on the pole
- bearing the camera
- tilt the camera
- set the frame, landscape or portrait
The cradle here described is the one made end of 2009.
The camera seating has a mini servo for the zoom command of the camera. 



Tube Fitting
The external diameter of the tip of my poles is 9mm . It is the smallest diameter that can be used for two reasons:
- mechanically, the limit for a 600g cradle is 7mm
- 8 mm inside diameter is the minimum for the link cable to go through.
The tip section, as the whole pole, have a conical shape. Fittings that could locally smashed the tip must be avoided . I decided to make a fitting from a tube that would fit the conical shape.
This is a put-over fitting; easy to install, easy to remove..
Tip of the top end section covered before coating
Here is the tip fitting make:
¤ The fitting is an aluminum pipe Ø12-10mm about 200mm long which ends are carefully smoothed.
¤ The tip of the top section is covered on 15 cm with thin polyethylene film (such as those given when shopping) which is set in 2 or 3 layers around the tip.
Excess of film is plugged in the top hole.
¤ 10 cm of the surface of the film is pasted with epoxy glue. 5cm inside the aluminum pipe is also pasted.
¤ The pipe is set over the tip as far as possible.
¤ Let the glue harden and then release the pipe from the tip. Remove all polyethylene film.
¤ Try again to set the pipe on the tip. There is now a perfect put-over fitting, When pressed enough, it does not rotate.
  Tilt is important for centering pictures. Lean the pole is not practicable. First it's loosing elevation, second the pole is bowing and it is almost impossible to get it steady.
On this page Tilt movement with a cog-wheel, there are all details on the modification of the RC-servo and size of the cog-wheel.
On the pole, only 90° angular range is necessary, so the RC could be used. In fact, I found easier to wire the command so the electronic board and the potentiometer are removed.
On this pic of my cradle built end of 2009, the servo is a HES 188 which has metal bushings and let the cog-wheel axle Ø3mm running completely through the last gear.
On this picture of  another cradle, the spring C  is for the cog  and the spring W is for the weight offset.
Note that the tilt is such that it brings the camera outside the pole axis. This let shot pictures until the pole and the bearer. However, it sets off the weight of the camera and it needs a spring to compensate and to ease the action of the servo.
Camera seating
Because it sometimes need to change picture frame from landscape to portrait, the seating is designed for easily do it. The camera seating is mounted on the vertical part of the rotating assembly.
This camera seating is also easy to change for another one that fits another camera.
Note the nut for mounting the camera which is screwed aside as not to lost it.
  The mechanical assembly of the cradle is now complete. The camera support is shown as portrait setting.
It weights 160g.
The tilt angle ranges from +15° upward to -70° downward.
The spring seen here is for the weight compensation. Torsional springs for the cog-wheel are hidden on this picture.