Ring element

To get the correct height in the end, i will weld an Ali ring element that is based under the acrylic dome.

I will use the original dimensions used for the Ali ring of the 300 mm dome. But the secret is in the
height of it.

This outer Ring will be higher and will have a conic ratio. This has to be done, because the ring itself is smaller in diameter. 463 to 450 mm.