A WA man convicted of the bashing murder of a Goldfields worker has had his appeal against his conviction unanimously dismissed.
Stephen Gandy, 41, was appealing his life sentence, handed down 18 months ago over the murder of 24-year-old Beau Davies in February 2014, whose dismembered body was stuffed into a bin over a drug debt.
Gandy is one of four men behind bars over the gruesome death, with he and Steven Roberts, 51, sentenced to life (to serve at least 23 years) for murder, while Jayden Kett, 27, and Christian Gomis, 32, were convicted of the lesser charge of manslaughter and will be eligible for parole after six years.
Appearing via video link from Casuarina Prison to the Supreme Court of WA on Thursday, Gandy was visibly disappointed and shook his head when Justice Robert Mazza read out the Court of Appeal's finding that there was no merit in his appeal.
"In our opinion, the case against the appellant was very strong," the judgement read.
Gandy, who was self-represented during the appeal, argued the trial judge should not have allowed unrecorded admissions made by him to a police officer to have been admitted as evidence.
He claimed the jury were also not adequately informed unanimity was required to reach a guilty verdict, that the guilty verdict was unreasonable, and that the trial judge made made errors in the way the trial was conducted.
"[Gandy] complains that the trial went for seven weeks, and that a large portion of the evidence that was adduced was irrelevant and highly prejudicial to him," the judgement read.
"...In our opinion, the appellant suffered no miscarriage of justice as a result of the joint trial."
The murdered man, Mr Davies, was attacked at his home in South Kalgoorlie before being dismembered in the bathroom of Steven Roberts' house in nearby Boulder and dumped in a wheelie bin.
Gandy, who was a gold mine supervisor at the time, attacked Mr Davies with a sword and a knife while Roberts, who was a drug dealer, beat the victim with an axe handle.
Kett, who turned himself in to police after the crime, bound Mr Davies in cable ties to render him defenceless during the assault, which Justice Michael Corboy described during his sentencing as "sustained and savage".
Gomis, a mining and construction worker, destroyed evidence, including the hard drive connected to Mr Davies' CCTV system and, along with Kett, used bleach and Draino to clean Roberts' bathroom and car.
Roberts and Gandy will be eligible for parole in 2037.