u/AcanthaceaeMuch2736

How do you join multiple carbon fiber aircraft parts together after making molds from 3D printed parts?

How do you join multiple carbon fiber aircraft parts together after making molds from 3D printed parts?

Hi everyone,

I’m interested in building a VTOL UAV starting from parts originally designed for 3D printing.

My idea is to:

- print the original parts in PLA,

- use them to create molds,

- then manufacture the final parts in carbon fiber composite.

The problem I’m trying to understand is the structural assembly process afterward.

For example:

- wing halves split into multiple sections,

- carbon tube support plates/bulkheads,

- fuselage sections,

- internal structural parts.

Once all these carbon fiber parts are finished, what is the correct way to join everything together structurally?

Do people usually use:

- epoxy adhesive only,

- fiberglass/carbon overlay laminations,

- internal sleeves/joiners,

- bulkheads,

- carbon patches over joints,

- or a combination of all of these?

I’m especially interested in understanding how to:

  1. Join multiple wing sections together

  2. Attach carbon tube supports to the wing structure

  3. Connect fuselage sections without creating weak points

  4. Build a structure that can handle VTOL loads and wing torsion

If anyone has experience with UAVs, RC aircraft, composite airframes, vacuum bagging, or molded carbon structures, I would really appreciate some advice.

Also, if you know any good YouTube channels/videos/tutorials about:

- composite aircraft construction,

- joining carbon fiber parts,

- molded RC aircraft,

- structural composite techniques,

please share them.

Thanks!

u/AcanthaceaeMuch2736 — 2 days ago