According to Carbonda's QC, this is totally normal. Is there any owner of a 1056 that has headtube that looks like this on the inside?
Thanks!
The inside of the head tube on my FM1002 isn’t exactly like that but I can see the similarities in the manufacturing technique. Definitely some surface “wrinkles”/protruding edges of carbon sheets and excess resin you wouldn’t expect to see in a branded frame but not quite as sharp edged as those seen in your picture.
It’s not as clean looking but likely has no structural effect at all. Just saves them some money to skip that level of obsessing over how it looks on the inside.
I really wouldn’t worry about it. What you thought might be a void is probably just a chip that separated from the excess surface resin. Doesn’t tell you anything about the interior structure of the frame.
You could probably even sand those prominent edges down a bit if they were rubbing on cables or something, and have zero issues from doing it.