Answer:
Take carbon fibers, weave these into fabric sheets.
Next make a mold for the part you want
Spray this with first a release agent (wax)
Next is the top level of finish
The you lay the fabric in the mold, lay a resin and hardener mixture over the fabric, rolling to remove air pockets.
Several layers and repeats with the resin hardener mixture.
Next a plastic sheet carefully sealed and plumbed to a vacuum pump that insures the sheets of fabric are closely intertwined with the absolute minimum amount of resin mixture to create the strongest part possible.
The whole mess usually goes into a curing oven now.
When it comes out it cools and then the part is removed from the mold.