Proxy object in 3ds Max

Here I will explain how to create and use a proxy object in your scene. Proxy is great for placing lots of high ploy objects like a trees, cars and people.

Note:
1 - Before making xref object, make sure the object scale is 100%. If not, using Reset XForm to correct scale.
2 - You can use a regular mateiral instead of xref material.
3 - Object ID doesn't work for xref object, so if you need ID using material ID.
First, make sure mental ray render is selected.
Create any object that you want to make a proxy. If your object is not a single mesh, attach everything, then apply a material to the entire object, then save the file. Later, we will use this file to apply a material to a proxy object.

Next, go to create panel and choose mental ray from the drop down.

Click mr Proxy and create proxy box in the scene.







 

Select the proxy box and go to Modify panel. Select the Source Object - None, then click the object which is you want to make a proxy from the scene. Go to Write Object to File… and save the proxy file. Now your proxy box should be a bunch of dots. The proxy file is done. Save the file.


 



 






Now I will explain how to use this file to your scene.
Open a new scene and create a proxy box same as last time you created, then go to Modify panel. Click Proxy File… and choose the file you just created. You will see dots again. If you want to see more shape clearly put high number in Display – Viewport Verts.













We got the object in the scene but not a material yet. Go to Material Editor and Choose Xref Material shader.

Then, choose the max file you created before.

You will see the object name so pick the original object (not a proxy) and click OK. Apply this material to the proxy.