More 3D drawing adventures

At the risk of boring people with my new found skill I have drawn up a couple more items yesterday.
First was a much simpler task than the chimneys that I have drawn so far, this time a dome for the D2.

Then at a friend’s suggestion I had a go at the GNR version of the Ramsbottom safety valves.

I had got this far when Chris looked over my shoulder and said “it looks good but it doesn’t look right” she was of course correct the springs should be on the lever that I hadn’t drawn yet not the valve stems…
To be continued…