Hi folks.
I’ve had a 6” JET jointer and a 12 inch Delta lunchbox planer for about 20 years. I don’t use either very much, and the blades are still giving good cuts. So I have never touched the blades or the bolts that hold them in place. Should I check them for tightness, just to be safe?

I realize that this sounds like a really dopey question. But I woke up last night thinking about what horrible shrapnel a blade would be if it came loose.

I’ve never worked on these machines and I’m reluctant to do so unnecessarily. On one hand, I’m concerned that I could goof up a machine that’s working fine. Or worse yet, overtighten/undertighten something and cause the shrapnel I’m worried about.

What does your experience say? Should I put a wrench on this to check that all the bolts holding the blades are still tight?

Thank you.
Fred