Tableting machines and encapsulating machines are of the most highly watched items you could purchase in the eyes of the DEA. If you are asking this kind of a question, and you purchase a tableting maching you will go to prison (possibly).
TITLE 21 - FOOD AND DRUGS
CHAPTER 13 - DRUG ABUSE PREVENTION AND CONTROL
SUBCHAPTER I - CONTROL AND ENFORCEMENT
Part D - Offenses and Penalties
Sec. 843. Prohibited acts C
(a) Unlawful acts
It shall be unlawful for any person knowingly or
intentionally -
(6) to possess any three-neck round-bottom flask, tableting machine, encapsulating machine, or gelatin capsule, or any equipment, chemical, product, or material which may be used to manufacture a controlled substance or listed chemical, knowing, intending, or having reasonable cause to believe, that it will be used to manufacture a controlled substance or listed chemical in violation of this subchapter or subchapter II of this chapter;
(7) to manufacture, distribute, export, or import any three-neck round-bottom flask, tableting machine, encapsulating machine, or gelatin capsule, or any equipment, chemical, product, or material which may be used to manufacture a controlled substance or listed chemical, knowing, intending, or having reasonable cause to believe, that it will be used to manufacture a controlled substance or listed chemical in violation of this subchapter or subchapter II of this chapter or, in the case of an exportation, in violation of this subchapter or subchapter II of this chapter or of the laws of the country to which it is exported;