thanks yeah I'm new to the site and have no idea what im doing lol. but im going to talk to my teacher tmrw and see what he thinks and ill probably be reposting. I appreciate the help !

ohhh okay and yeah i think ill have bots wielded to back inside half of container then have them come threw top have for lock washer and bolts, so i can open and close when needed but it will stay in place. Also are modified sprinkler valves hard to make?

what is a sabot? and also how do i make a padded piston
BTW i forgot it has to be under $150

Well my cousin recommended this site and said it could probably help me out. My class is entered in an "iron egg contest", if you don't know what it is, its a bunch of schools make a contraption to shot an egg the furthest, sounds stupid I know, but I'm wanting to make this an awesome experience. Wh...