And building a dirt cheap centrifuge would not be hard.
Not to mention the myriad of fine centrifugal devices available to hive children via introductory chem sets. Add a variable speed drill and oy vey! I'm separating!
http://www.orgsyn.org/prep.asp?prep=cv1p0347 (http://www.orgsyn.org/prep.asp?prep=cv1p0347)