A lot of noise poured out of the Muskingum County Fairgrounds Saturday.
The Mid-East Ohio Engineering Expo brought together mechanics from different states and counties who are able to share their hand-made engines.
"You get a lot of tips from other people everybody does this differently," says Jim Dunmyer of Michigan.
Some folks sell the engines they build and others consider it a hobby.
"I'm an electrical engineer by trade and do computer programming, so this is a little bit of a diversion from that. Getting hands-on, working with your hands versus working at a keyboard," says Doug Cvelbar from Columbus, Ohio.
The expo features gas engines, steam engines, an airplane engine and many more.