The following document should be read by all so that there is no misunderstanding regarding these offences as they are completely illegal and definately NOT recommended or authorised by anyone with authority.
Crimes (Currency) Act 1981...s.6, s.7, s.9, s.11, s.14, s.16, s.17, s.18
http://www.comlaw.gov.au/Details/C2008C00400/
Defacing (and the many laws below) of Australian currency (without authorisation as I suspect that has been done) are Commonwealth offences, and can collectively attract a large jail sentence, fine or both, irrespective of the reason for doing so.
(SECT 16
Defacing or destroying current coins or current paper money
A person shall not, without the consent, in writing, of an authorized person, intentionally deface, disfigure, mutilate or destroy any coin or paper money that is lawfully current in Australia.
Penalty:
(a) in the case of a person, not being a body corporate--$5,000 or imprisonment for 2 years, or both; or
(b) in the case of a person, being a body corporate--$10,000.)
Once a coin has been defaced, the defacer has then made counterfeit money.
6 Making counterfeit money or counterfeit securities
A person shall not make, or begin to make, counterfeit money or a counterfeit prescribed security.
Penalty:
(a) in the case of a person, not being a body corporateimprisonment for 14 years; or
(b) in the case of a person, being a body corporate$75,000.
Possession of defaced currency is an additional commonwealth crime.
(SECT 18 Possessing defaced coins or paper money
A person shall not have in his or her possession for sale a coin or paper money that is lawfully current in Australia and that has been defaced, disfigured or mutilated, knowing it to have been defaced, disfigured or mutilated.
Penalty:
(a) in the case of a person, not being a body corporate$5,000 or imprisonment for 2 years, or both; or
(b) in the case of a person, being a body corporate$10,000.)
Possessing counterfeit currency is also a commonwealth crime.
9 Possessing counterfeit money or counterfeit securities
(1) A person shall not:
(a) have in his or her possession counterfeit money (not being an excepted counterfeit coin), knowing it to be counterfeit money; or
(b) have in his or her possession a counterfeit prescribed security, knowing it to be a counterfeit prescribed security.
(1A) Subsection (1) does not apply if the person has a reasonable excuse.
Note: A defendant bears an evidential burden in relation to the matter in subsection (1A) (see subsection 13.3(3) of the Criminal Code).
(2) It is a defence to a prosecution of a person for an offence against subsection (1) in relation to the possession of counterfeit money or a counterfeit prescribed security if the person charged establishes to the satisfaction of the court:
(a) that he or she did not make the counterfeit money or counterfeit prescribed security; and
(b) that he or she did not, after the time when he or she first learned that the counterfeit money or counterfeit prescribed security was counterfeit money or a counterfeit prescribed security or the time when he or she acquired the counterfeit money or counterfeit prescribed security, whichever was the later time, have a reasonable opportunity to surrender it to a member of the Australian Federal Police or of the police force of a State or Territory or to any other person prescribed for the purposes of this section.
(3) A person shall not, with intent to defraud, have in the possession of the person an excepted counterfeit coin, knowing it to be counterfeit money.
Penalty:
(a) in the case of a person, not being a body corporateimprisonment for 10 years; or
(b) in the case of a person, being a body corporate$50,000.
Additionally, the (clean) acetone that has been used could also be considered to be an instrument to create counterfeit currency in the method used.
11 Instruments and material used for counterfeiting
(1) A person shall not:
(a) make or mend, or begin or prepare to make or mend;
(b) buy, sell, receive or dispose of, or offer to buy, sell, procure or dispose of; or
(c) have in his or her possession;
a machine, engine, tool, plate, die or other instrument that, to his or her knowledge, has been used, has been adapted for use, or is intended for use, in, or in connection with, the making of counterfeit money or counterfeit prescribed securities.
Penalty:
(a) in the case of a person other than a body corporateimprisonment for 10 years; or
(b) in the case of a body corporate500 penalty units.
(2) A person shall not:
(a) buy, sell, receive or dispose of, or offer to buy, sell, procure or dispose of; or
(b) have in his or her possession;
bullion, paper, metal, ink, dye or other material that, to his or her knowledge, has been used, or is intended for use, in, or in connection with, the making of counterfeit money or counterfeit prescribed securities.
Penalty:
(a) in the case of a person, not being a body corporateimprisonment for 10 years; or
(b) in the case of a person, being a body corporate$50,000.
(3) Subsections (1) and (2) do not apply if the person has a reasonable excuse.
Note: A defendant bears an evidential burden in relation to the matter in subsection (3) (see subsection 13.3(3) of the Criminal Code).
The used acetone can also be considered to be material that has been used to create counterfeit currency
(15 Possessing filings, clippings etc.
(1) A person shall not have in his or her possession any material that, to his or her knowledge, was obtained by dealing with genuine coin in such a manner as to diminish its weight, whether that material consists of filings, clippings, dust, bullion or diminished coin, is in solution or is in any other form.
Penalty:
(a) in the case of a person, not being a body corporate$10,000 or imprisonment for 5 years, or both; or
(b) in the case of a person, being a body corporate$20,000.
(2) Subsection (1) does not apply if the person has a reasonable excuse.
Note: A defendant bears an evidential burden in relation to the matter in subsection (2) (see subsection 13.3(3) of the Criminal Code).)
Providing information on how to create counterfeit currency is also a commonwealth crime.
(14 Information with respect to counterfeit money or counterfeit securities
(1) A person shall not give, or offer to give, information with respect to the manner in which or the means by which counterfeit money or counterfeit prescribed securities may be made, bought, sold, procured or disposed of.
Penalty:
(a) in the case of a person, not being a body corporate$10,000 or imprisonment for 5 years, or both; or
(b) in the case of a person, being a body corporate$20,000.
(2) Subsection (1) does not apply if the person has a reasonable excuse.
Note: A defendant bears an evidential burden in relation to the matter in subsection (2) (see subsection 13.3(3) of the Criminal Code).)
All counterfeit currency is worthless and must be handed to the nearest police station or AFP office (as per the Commonwealth Act above s.9 (2)(b)).
Further Commonwealth offences can be committed if the counterfeit currency is then offered for sale, imported, exported or even uttered to any person.