I'm trying to build something and I need a bar to slide perfectly through a tubeI don't want there to be any space between them, but I need to make so that the bar can actually slide in the tubeAlso, if anyone knows how I would be able to reduce the friction? Oil? The metals are aluminum.
I'm curious what in heavens you are trying to makeIf you want a shaft to rotate inside a sleeve, the best thing to do would be to use roller bearings and plenty of greasea bit more complex of an engineering task but that's how I'd do itI also agree with Pilsner that using two aluminums won't work, unless this contraption you're making is a simple experiment and doesn't have to last a long timeOtherwise, use forged steel partsYou could also try graphite.basically it's similar to molybdenum but it's available at your auto store and it might just be what you needUgiidriver: I don't see the damage in using graphite on aluminum.I mean if he uses galvanized aluminum the anodized metal is plenty to inhibit corrosionUnlikely he's trying to spin the inner bar very fastHe really needs to tell us what he's connecting to and how big this thing is.
dust mites crawl on your body and clothing at all timestalk to your allergist.
