Before an animator can open a modelled panel, separate an assembly or move a carriage, the visual asset needs the relevant parts to remain independently controllable. Ask for that structure at the model handoff. A merged object that is convenient for a static image may be unsuitable for the movement the construction film needs.
The buyer's job is to identify which things move together and which move independently. The specialist can then choose an appropriate scene structure. Supplying a long parts list without explaining those relationships leaves the most important interpretation unresolved.
Describe groups in ordinary language
Write the intended action as a short account: the cover opens while the frame stays fixed; the fittings travel with the cover; the flexible connection remains attached at both ends. Use the source owner's terminology and identify the reference configuration.
This account is more useful than asking for every manufactured piece to become a separate animated object. Some pieces will always move together in the film. Separating all of them can create management work without improving the explanation. Other elements may appear connected but require independent movement at a particular moment.
Epic's scene-hierarchy documentation explains that child objects follow parent transforms. The grouping of imported components therefore has practical consequences for animation.
Test the grouping with simple motion
Ask for a rough action test before materials and camera polish. The test should show the requested movement and leave unrelated parts plainly visible. Watch for pieces that stay behind when they should travel, or move because they were grouped with the wrong assembly.
Have the product or design owner review the relationships. A marketing reviewer can judge clarity but may not recognise that a concealed bracket belongs to the fixed frame. Resolve that question from approved information rather than from whichever animation looks smoothest.
Movement pivots deserve their own check. A correctly separated door can still rotate around the wrong point. The brief should identify the real joint or approved illustrative pivot; production should not infer it from the centre of an object's bounding box.
A small handoff record
For each featured group, record its source identifier, fixed or moving role, parts that travel with it, and the action required. Add any component that must remain independent for a later view. This need not become a full engineering bill of materials.
Keep animation grouping distinct from assembly instructions. The fact that parts move apart in the visual scene does not establish how workers should install or remove them. If the film is intended to teach an actual procedure, that requires its own qualified content and review scope.
A hypothetical operable screen
A fictional building-product supplier wants to show an operable screening panel. Its source export merges the panel, frame and handle. The supplier can separate the visual geometry, but first asks which handle components travel with the panel and where the pivot sits.
The buyer provides an approved relationship sketch. A simple movement test reveals a small part that had been assigned to the fixed group. Correcting that structure before detailed animation prevents the finished scene from presenting an impossible mechanism. No performance or safety assessment is implied by this example.
Discuss the intended assembly movement with Live Images and confirm whether specialist model preparation fits the film. Bring the relationship account with the source asset so the proposal can address movement readiness rather than only file compatibility.
Prepared with AI assistance for Live Images. Planning guidance is general; suitability and production scope must be agreed for your project.