问个如何将犀牛里面的模型保存为opencascade中可以接受的brep格式

titip

THESE days ,i  am aim to develop a procedure based on opencascade, as the geometry need to be build in rhino,however the Algorithms i devise now only able to receive brep format files, i want to save the model in rhino as brep format file and input it to my procedure,however ,i do not find rhino and grasshopper provide the function to acheive this. nay body can help me?of couse not limit to grasshopper plugin,other plugin are also accepted!best regards!