Water jet technology

Hej😉 , I m kind of in a big trouble. I'm studying mechanical - industrial engineering and at the time kind of doing my intern in the company that specializes in metal cutting service. and i need a topic for my diploma thesis. i want something about water jet technology, any issue...since my host company doesnt want to give me any task related with it. any suggestions how could i solve the absence of experimental practice. the theoretical part it ok with me. however I dont know how to cover the experimental part. help! ASAP Thanks in adv