Hey everyone! Sorry about the delay in getting these updated files up. I've been sitting on them for months and just found the time to get it uploaded.

The big updates form my previous version (https://www.thingiverse.com/thing:2853745) include:
Raceways that are printed separately and then inlayed into the airframes.
More detail all over.
Boosters are closer together (closer to scale)
Landing legs are longer (closer to scale)
Grid fins moved up onto the nose cones / second stage (closer to scale).

Other parts and remixes from/for Chemteacher's model should still fit (thing 2478927 & 2457148)

5-21-2021 update: added octaweb with engines in one piece. Added booster section A parts with no actuator cavity. Added a stand.

Falcon Heavy
QTY Description
12 Actuator Female (black)
12 Actuator Male (black)
1 Booster Section A - Center (white)
2 Booster Section A - Sides (white)
3 Booster Section B (white)
3 Booster Section C (white)
1 Booster Section D Heavy Center (white)
2 Booster Section D Heavy Sides (white)
2 Nose Cone Bolt (white/not visible)
2 Nose Cone (white)
27 Engines-2 Part - Engines (silver)
3 Engines-2 Part - Octaweb (black)
12 Grid fin (or grid fin filled holes) (black)
1 Heavy Connecting Conduits BACK (white)
1 Heavy Connecting Conduits FRONT (white)
12 Landing Leg (black)
2 Payload Faring (or 1x Payload Fairing 1-piece) (white)
1 Second Stage Engine (Silver)
1 Second Stage Interstage - Falcon Heavy (black usually)
1 Second Stage (white)

Falcon 9
4 Actuator female (black)
4 Actuator male (black)
1 Booster Section A - Falcon 9 (white)
1 Booster Section B (white)
1 Booster Section C (white)
1 Booster Section D Falcon 9 (white)
9 Engines-2 Part - Engines (silver)
1 Engines-2 Part - Octaweb (black)
4 Grid fin (or grid fin filled holes) (black)
4 Landing Leg (black)
2 Payload Faring (or 1x Payload Fairing 1-piece) (white)
1 Second Stage Engines (silver)
1 Second Stage Interstage - Falcon 9 (black usually)
1 Second Stage (white)

https://youtu.be/fSCYxhBQ-C4