Hey there! So you're looking to set up a 3D viewer in Windows 10 using another program, right? Well, you've come to the right place! Here's a quick tutorial on how to do it.

Step 1: Choose the Right Program

First things first, you'll need to choose the right program to use as your 3D viewer. Some popular options include SketchUp, Blender, and Autodesk Fusion 360. Once you've selected your program, make sure it's compatible with Windows 10 and download it onto your computer.

Step 2: Install the Program

Next, you'll need to install the program onto your computer. This usually involves running the installation file and following the on-screen instructions. Once the program is installed, you can launch it to start using it as your 3D viewer.

Step 3: Set the Default Program

Now that you have your 3D viewer program installed, it's time to set it as the default program for viewing 3D models on your Windows 10 system. To do this, right-click on a 3D model file (such as an .obj or .stl file) and select 'Open with > Choose another app'. Then, select your 3D viewer program from the list and check the box that says 'Always use this app to open .obj files' (or the file type of your choice).

Step 4: Test It Out

Once you've set your 3D viewer program as the default, it's time to test it out! Simply double-click on a 3D model file, and it should open in your chosen program. You can now view and interact with 3D models using your new 3D viewer in Windows 10!

And that's it! You've successfully set up a 3D viewer in Windows 10 using another program. Now you can enjoy viewing and working with 3D models right on your computer. Happy modeling!