The Kendzierski spinner posts are accurate for the third-season robot. In fact, they are far superior to the spinner posts used in the original third-season robot. It is clear from photographs and screen grabs, that the original third-season robot's spinner posts are poorly made, with flaws that look like burrs, residual casting flashing, and poorly sculpted putty. Kindzierski spinner posts maintain the general dimensions of the third-season spinner posts but are free of the unsightly execution errors.

I, however, am buidling a first-season robot. In the first season of Lost in Space, the horizontal cone element of the spinner posts were far more sharply tapered than the second and third-season spinner posts.

Note the pronounced angle in the following photograph of the spinner posts on the original first-season robot:

Also, compare the first-season spinner post with this screen grab from the third-season episode "The Anti-Matter Man" (episode 74, original air date: 27 December 1967):

This is quite a contrast from the first-season robot's spinner posts seen in this screen grab from the first-season episode "Island in the Sky" (episode 3, original air date: 29 September 1965):

My machinist has begun to replicate these wonderful, sharply tapered first-season spinner posts in machined aluminum rather than cast aluminum.

Here is a peek at new but incomplete spinners. They have been drilled out to accommodate the micro motor that will spin the radar dishes and convey the wires into the main body of the radar section.

The vertical cone element above the ball will be separately machined and fitted into the top of the ball. The horizontal cone element will be more sharply tapered. Stay tuned for more updates on the spinner posts.