Lesson 01 of 05

MeshPart Pipeline

From Blender to Roblox — the modern asset import workflow.

MeshParts are the bridge between external modeling software and Roblox. The pipeline:

1.Model in Blender (or any 3D app)
2.Keep triangle count lean: <5000 for hero props, <1000 for background props
3.Apply one material per mesh (Roblox doesn't support multi-material per MeshPart)
4.Export as OBJ or FBX (FBX preferred for rigged meshes)
5.Import via Studio's Import tool — it creates a MeshPart with MeshId
6.Add SurfaceAppearance for PBR textures

MeshParts render faster than Unions. Always prefer MeshPart for complex organic shapes.

luau

1-- Programmatic MeshPart creation

2local mesh = Instance.new('MeshPart')

3mesh.MeshId = 'rbxassetid://YOUR_MESH_ID'

4mesh.Size = Vector3.new(4, 4, 4) -- must match original scale

5mesh.Anchored = true

6mesh.CastShadow = true

7mesh.Parent = workspace

9-- PBR SurfaceAppearance

10local sa = Instance.new('SurfaceAppearance', mesh)

11sa.ColorMap = 'rbxassetid://ALBEDO_ID'

12sa.NormalMap = 'rbxassetid://NORMAL_ID'

13sa.RoughnessMap = 'rbxassetid://ROUGHNESS_ID'

14sa.MetalnessMap = 'rbxassetid://METALNESS_ID'

16-- Script: swap texture at runtime (e.g. day/night)

17local function setTexture(meshPart, colorMapId)

18 local sa = meshPart:FindFirstChildOfClass('SurfaceAppearance')

19 if sa then sa.ColorMap = 'rbxassetid://' .. colorMapId end

20end

READY · 20 lines