I know I have read some recommendations here before, but I have been searching for an hour now and can't seem to find them. What do you use to lubricate your leadscrew? I have 2 start Acme lead screws with dumpster anti-backlash nuts. They are rather stiff and when I run my machine, I get some vibration.

I'm going to double check alignment, etc, but in the meantime, I'm looking for a recommendation on a lube to use. I prefer something dry so that I don't get sawdust, etc sticking to the screw and causing more friction.

Thoughts?