This is the knob for adjusting the top wheel on my bandsaw, to maintain its being coplanar with the lower wheel.
https://www.flickr.com/photos/438361...posted-public/

There is no locking mechanism for this knob, so it moves, unscrews, because of vibration, as the saw is operating, hence, the wheels become out of plane. The saw blade tracks too far off center of the wheel. It would eventually track off the wheel, if I let it.

I taped it, but I thought to apply something like the rubbery stuff that's on some nuts, to keep them snug onto their bolts. What is that stuff, that's on those nuts?

Is cosmoline, that's on saw blades and router bits, the same stuff? If so, I could melt some, for coating the coplanar knob threads?

If cosmoline is not the same stuff, might there be something more readily available, in my/anyone's shop, that can be used for a permanent application?

I suppose teflon tape could be used.... and easily reapplied, when needed.

Sonny