So, I'm a raising sophomore in Mechanical Engineering, and I haven't taken my Deforms class yet. I was hoping that one of the smart people on this forum might be able to help me out with that? I'm trying to make a case be able to slide into a cavity, and then lock in place upon reaching the end of the cavity, and then have the user be able to easily unlatch that case and pull it back out to access the contents of said case. I'm thinking my best bet is to have a cantilever hook attached to the case that will latch on to a small notch. What I need to know is, How wide, thick, and long should I make the Beam of the cantilever and What angles and dimensions should I give the hook to ensure that 1) the beam and/or hook won't snap off, 2) the cantilever hook is still flexible enough to allow the user to unlatch it 3) the case will stay locked when the hook is latched I'm using the Strong and Flexible Plastic. I'm pretty sure that what you need to know about the material to solve this problem is here: http://www.shapeways.com/rrstatic/material_docs/mds-strongfl ex.pdf I just don't know how to use that information ANY rule of thumb thoughts would also be totally appreciated!