Anas - @Seve For this issue https://linear.app...

      cadModel={
        <cadassembly>
          <cadmodel modelUrl={glbPath} modelUnitToMmScale={1000} 
            positionOffset={{ x: 0, y: 0, z: 0.2 }}  
          />
          <cadmodel modelUrl={stepPath} modelUnitToMmScale={1}
            positionOffset={{ x: 0, y: 0, z: 0.2 }}
          />
        </cadassembly>
      }