Originally Posted by
Morelock
It's possible to, but you're still cutting corners realistically.
A better use for a 3d printer is either to print the negative (2pc mould) or print a positive and then build a mould around it traditionally, then lay up your carbon fiber.
It's going to be very tedious to figure out a way to vacuum bag a complex aero extension, figure out how to mount/bond/laminate your connection point into that by doing what you're suggesting. Much easier just to use your 3d printer for plug making.
What you suggest will be effective in replicating copies. Then the manufacture of the matrix will be beneficial. But with single options, the lamination option is acceptable. Did similar. This is how they do it in aviation. Can I ask you for files of aerobars and armrests? If I do, I will show the result. Thanks!