Here are some pics showing my progress. I started working on the tertiary light baffle and curved spider veins. While I was doing that I decided to cut some ellipses with the minor axis being 78mm.
The cutting tool I made was out of an old pipe that was machined to the right thickness and diameter. To cut six layers of glass it took around 3 hours which gave me some time to make the spider veins.
All in all everything turned out well and tomorrow I'll finished the tertiary holder.