Here are some pictures of the wheel finished.
All in all it was very instructive and easier than it looks.
The rear wheel was built first.
I didn't check the dish early and had to correct it late which is not good.
These are sapim C-Xray and Secure Locks nipples.
I see on that picture that some blades could be better aligned
Here is a view of the rim without holes.
Playing with the screws/nipple and a magnet is as easy as in Peter's video( not the first ones, but it comes quick ).
Due to their V-Shape, long valves are needed, probably 60mm or more.
I will buy Continental Tubes, with 82mm valves, and cut them. This is a far cheaper option than buying tubeless valves.
The front wheel was a major pain.
Not for the building in itself, but because there was a remaining piece of the plastic bag that inflates the carbon against the mold inside.
We saw that already in broken frames.
So it must be more common than we think.
However here, it prevented to move the nipples inside to 4 holes !
After fiddling a couple of hours, I was able to tear apart the plastic with a tip through the holes, and let the nipples move.
This is obviously a problem specific to no-hole rims.
Unfortunately one nipple+screw is still stuck in that plastic plug, it doesn't move anymore, even with a strong magnet.
And I can't ear anything, I'm afraid this will get out probably one day at a bad moment
I discussed this with Peter, that this could be checked in a minute on their side to not happen again.
I meticulously followed Roger Musson book too.
Although against some of his advices, I took high-end/exotic parts for my first build: carbon rims, bladed spokes, alloy nipples, and the no-holes rims.
I won't ride them before mid-July after my vacations.
If you never built a wheel, and like to tinker, do not hesitate to try, it is a very gratifying experience.