Hi guys,

I have a scene with a large number of battlefield kitbash3D props (spears, barrels etc). I have several flags in there as well and I'd like to have the cloth part of the flag props blowing gently in the wind.
I have managed to setup a scene that allows me to reuse the large number of materials that get imported with the kitbash3D USD assets in Solaris. I have done this using an instance node in LOPS. The trouble is I am now unable to break out the cloth parts for simulation. And if I set up my instances any other way I then lose the materials solution I have engineered.
Can anybody suggest a way to get cloth going in/out of solaris instances or point me to any resources that might shed some light on the issue?
Thanks!

I’ve wrestled with that exact issue in Solaris—instancing makes material handling smooth but blocks simulation access like Vellum. One workaround I found is to split the cloth geometry before instancing, simulate it outside LOPS, cache the Vellum result, then bring it back in via a file cache or SOP Import. It keeps materials intact while giving full sim control.