Thankyou legz. BD makes syringes I use for testosterone. 1ml size for insulin so i can very easily draw .5 of medicine. Can measure tenths.

Erin - read 2nd line initial post.

I figure a sander, buffer, grinder or even fan can be made to safely spin the tube. I haven't looked up diameter or rpm yet. I rebuilt my first car engine in 1987? Thanks now I feel old.