Sometimes the search engine is just tedious as FUCK, so instead of it taking you hours to find all the info you need, I'll just give it to you. But you did post in the wrong forum.
The only good source of ether that I know of is from engine starter fluid, that you can find in an auto parts store, and maybe from your school's biology or chemistry lab ;) .
Another way to get ether is by distilling anhydrous ethanol (ethanol distilled azeotropically with toluene or a multitude of other binary, or tertiary azeotropic mixtures), and then taking this very dry ethanol and distilling it with sulfuric acid. You can look at how here:
https://www.thevespiary.org/rhodium/Rhodium/chemistry/ethyl.ether.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/ethyl.ether.html)
But why the fuck use crappy ass dangerous ether, instead of the many easy to get nonpolar (NP) solvents that are readily available? Though, I do realize, that sometimes a very specific solvent can be necessary.
Oh yeah, I almost forgot. Petroleum ether is totally different than what is usually called ether (and is truly ethyl-ether). They do the same thing in that both are non-polar solvents. The petroleum ether is a mixture of relatively short chained aliphatic hydrocarbons, much like coleman fuel, naptha, hexane etc. Try looking these types of things up in the Merck index and organic chemistry textbooks at your local library, and you will learn much more than you can get out of the sinical bastards here at the hive.
Oops, one last thing. The mixture of crap in the can of enginestarter needs to be fractionally distilled to get reasonable ethylether.
i posted this long ago in a diffrent Forum, but maybee its good... (Whats good on Ether selfmade??)
But anyway, its dangerous, too:
http://www.seilnacht.tuttlingen.com/Chemie/ch_ether.htm (http://www.seilnacht.tuttlingen.com/Chemie/ch_ether.htm)