Hi,
I’m noticing some noise as the z axis moves up and down during a print.
I figure those leadscrews need a wipe down and some lubricant.
I have some Magnalube I use on other machines lead screws. Is that suitable for the taz 6?
I’ve always used Lucas white lithium grease.
Like $12 for a massive tube from my local auto part store, and it’s probably enough to keep a dozen machines going for years.
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Nice new avatar!
I went with what I had on hand and ran the printhead up and down a few times. I also used a paper towel on the last pass to get any excess off. They sure shiny again!
I’ve logged a lot of time on the Taz 6 as of late, cranking out some craft show prints.
I know the X axis has those Igus bearings. Can we use light oil (like sewing machine oil) on those? Or are they “self lubricating”?
They’re self-lubricating.
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I use silicon spray lube on those Delrin nuts on the Z axis. Lithium tends to degrade them over time. Most of the noise is caused by plastic vapors from the printing deposting on ALL the surfaces. 
They’re made of Drylin not Delrin. Delrin is a DuPont product that doesn’t have much in common besides being a close name.
Everything on Igus’s data sheets say no lubrication. Your best thing to do is just wipe any dust/contamination from the linear rods.