How to combine/ join two meshes in blueprints in game

Development Programming & Scripting
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im trying an vr project where if i random object assembled to one object for example when i merge 2 meshes and use an welding component ot overlap it should merge into one object and i can pick it up and have my physics simulated

i tried attach Component to Component but it didnt work im looking for insights and blueprints

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Hi @Sreejith_SHR

If you’re trying to dynamically combine two or more meshes into a single physical object during gameplay (so it behaves like one unit and can be picked up with physics), here are a few approaches to try:

:white_check_mark: Option 1: AttachActorToActor or AttachComponentToComponent

These can work, but make sure you:

  • Set Weld Simulated Bodies to true
  • Attach after all physics are disabled, and re-enable physics on the root after attachment
  • Use the root component as your anchor

Example in Blueprints:

  • On overlap, disable physics on both
  • Attach Component B → Component A (with Weld Simulated Bodies)
  • Re-enable physics on root (A)

:test_tube: Option 2: Use UProceduralMeshComponent or Merge Actors

For runtime merging (if visual + collision need to be fused), look at:

  • Merge Static Meshes (Editor utility only)
  • Or dynamically create a new Procedural Mesh

This is more complex, but gives a true “merged” result that can be simulated easily.

:light_bulb: Bonus Tip (for Project Organization)

In projects like this with a lot of interactable parts, variations, and debug steps — it helps to keep track of:

  • What meshes need welding
  • What bugs were noticed (e.g. “root collision fails here”)
  • What’s done vs to-do

We actually built a tool for that called Asset Optics — lets you add per-asset checklists, comments, and notesdirectly inside the Unreal Editor and sync it to a web dashboard.

Not directly part of the welding solution, but definitely helps when testing variations or logging results while building a VR system like yours.

Happy to dig deeper if you want Blueprint snippets or share a test setup!

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Thank you for Clearing my Bug with attach component to component i unknowingly use simulate physics way early thats why it doesn’t work.

now need to figure out how to make the meshes look like they been welded together

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i am looking for something like this youtube video any answers