Well, you're wrong, but okay.

Historically, the two uranium enrichment methods that have operated on a commercial scale are gaseous diffusion and the gas centrifuge. Gaseous diffusion was the first commercial enrichment process, but it is energy-intensive and has been replaced by centrifuge technology in commercial use.[5] The last large commercial gaseous diffusion plant, the Paducah Gaseous Diffusion Plant in the United States, ceased enrichment operations in 2013.[22]

In the mid-2020s, commercial uranium enrichment is performed by gas centrifuge plants

https://wikipedia.org/wiki/Enriched_uranium#Enrichment_methods

Nope, separation between different Uranium isotopes is achieved by centrifugation (of a gaseous form). Pretty much every time where you have something that has identical chemical/physical properties outside of a differing molecular weight, centrifugation is the way to go if you want to do it quantitatively.

What if I just combine it with gas (petrol) instead?

Nuke speedrun any%

Yeah that just sounds like rotation and inclination with extra steps.

I'm partial to simply using "til" myself.

Not to be overly pedantic, but fire is naturally occurring. Humans only invented ways of utilizing it.

I thought everyone in this community was in the shower 24/7

Not OP, and I'm not sure how the lathe itself does it. But it shouldn't be surprising that it's possible to create more precise tools from less precise tools. Otherwise it would be impossible for us to ever create tools more precise than our own hands and fingers.

Basically, any moving mechanical system has slop/clearance in it. When operating machine tools this is called "backlash", aka how far you have to turn an adjustment handle before it creates a real change in machine position. Any and all moving mechanical systems will have some non-zero amount of slop.

Skilled operators can compensate and "take out" this backlash so that each cut runs perfectly true. Basically as long as you take a "sloppy" machine and always adjust it to run against the very edge of its "sloppiness" zone, you get high precision... I have used lathes at my old college with probably 0.100" or more of backlash and was still able to turn parts that had less than 0.001" of runout.

And obviously once you get to computer controlled machining centers the backlash compensation can be baked into the program to get perfectly true cuts each time.

In terms of precision? Not entirely, there are limits to true mechanical precision that is necessitated by lubrication for moving parts, running fits, and natural vibrations.

When combined with other systems (aka computers) you are able to build shit like ASML microchip lithography machines...

Oblate sPhereoid

What I'm describing is actually possible with ordinary materials, unlike the space elevator. This is less science fiction than a space elevator. Steel is good enough. Oh, and the throughputs possible for systems like this make a space elevator look like a toy.

I'm referring to concepts like the orbital ring.

You could absolutely build a train to space using such active support methods. And a more fanciful and impractical version is vast water-filled structures that allow one to literally a sail a boat to the Moon. I doubt someone would actually go to the trouble of building such a massive and impractical construct for such a silly purpose. But in principle it is possible.