Are you a Roblox game developer looking to add a 3D viewer to your game? Look no further! In this article, we'll walk you through the steps to create a 3D viewer in Roblox using scripting.

Step 1: Set Up the Environment

Before you begin, make sure you have Roblox Studio installed on your computer. Open Roblox Studio and create a new place for your 3D viewer project.

Step 2: Create the 3D Model

Next, create or import the 3D model that you want to display in the 3D viewer. You can use tools like Blender or other 3D modeling software to create your model. Once you have your model ready, import it into Roblox Studio.

Step 3: Add a Part for the Viewer

In Roblox Studio, add a new part to your game that will serve as the 3D viewer. You can customize the part's size, color, and position to fit your game's design.

Step 4: Write the Script

Now it's time to add the script that will make the 3D viewer work. Open the scripting window in Roblox Studio and write a script that will display the 3D model on the viewer part. You will need to use the 'LoadAsset' function to load the 3D model and the 'SetPrimaryPartCFrame' function to set the position and orientation of the model.

Here's an example of what the script might look like:

```lua

local viewerPart = script.Parent

local assetId = 123456789 -- Replace with your 3D model's asset ID

local model = game:GetService('InsertService'):LoadAsset(assetId)

model:SetPrimaryPartCFrame(viewerPart.CFrame)

model.Parent = viewerPart

```

Step 5: Test and Refine

Once you have the script in place, test it in Roblox Studio to make sure the 3D viewer functions as expected. You may need to make adjustments to the script and the viewer part's properties to get the desired results.

Step 6: Publish and Enjoy

Once you are satisfied with the 3D viewer, publish your game on Roblox and enjoy seeing your 3D model come to life in your game!

In conclusion, creating a 3D viewer in Roblox is a great way to enhance the visual experience of your game and engage players in a new and interactive way. By following the steps outlined in this article, you can develop your 3D viewer skills and take your Roblox game development to the next level.