Continuing on the roof skin topic, this was by far the largest infusion I've done. It took about an hour to get to this point:
It's starting to become obvious why the oven has to be so large!
It turned out pretty great!
The final trimmed part will be about 3000g, or 6.6 pounds. Is it a bit heavier than you might expect? Well, it is fully my intention to post a picture of me STANDING ON THE ROOF once it's bonded to the shell. Preliminary testing indicates this has the strength and stiffness for that to happen.
If someone wanted a lighter version for a racecar I could make one as light as 1500g, but IMO it would be completely unsuitable for a street car.
My measurements and calculations tell me if I was to remove the roof skin from a non-sunroof car, that piece of steel would weigh 13.5 pounds, so about double that of the carbon skin.
The truthful and realistic weight savings for removing a sunroof and all its mechanisms, cutting a larger hole, and bonding on a carbon skin will be in the neighborhood of 35 pounds.