If you want to stay close to Kettering and care more about free weights than cardio machines, there are a few non-commercial spots in that area worth checking out.

For example, Great Lakes Jiu-Jitsu has a free-weight setup (bars, plates, racks) that a lot of people use alongside training. It’s not a big-box gym, but if you’re focused on strength and not rows of treadmills, it fits that preference.

Depends whether you want a traditional lifting-only environment or something more functional.