https://www.reddit.com/r/EngineeringStudents/comments/4213b7/my_worst_fear_has_finally_come/ Hey guys, as shown in above link, I've explained my almost no engineering knowledge and no experience in design project, which put into an intense anxiety attack. I really do not want to trouble my 2 team members so I decided to suck it up and made a decision to make contribution So for the senior design project, we're making a tension tester using 3d printed parts. We're planning to use off the shelf and easily fabricated parts and use stepper motors coupled to lead screws to generate enough force required to break the specimen (3d printed parts). The load applied by the machine will be measured using load cells mounted between the jaws that hold the specimen and the frame of the machine. Arduino will be used to read the data from load cell and possibly a second Arduino will control the motion of the stepper motors using a stepper motor driver. The overall frame of the machine will be built from extruded aluminum sections with slots for t-nuts. My questions are I'm not really sure what he meant by use stepper motors coupled to lead screws to exert the force? I know that stepper motor generate mechanical energy to make rotation but when he said coupled to lead screws did he simply just meant connecting it to the main body? I really want to make a contribution and not feel like a worthless human being. Please provide advice on how I can prepare myself to take part in making this? (I tried researching how tension tester is made and all I get is video of pre-made one being used for experiments). In other words, I would like a proper guide to learn the creating process. Should I tell the group that I really have no experience in this field and that I'm gonna have to do lot of extensive research to make contribution and might take longer than others?