Aaron John Hinchcliffe of Cook Drive pleaded guilty to punching his stepson to the face before throwing a chair and a pool cue as the 18-year-old lay in a fetal position in his bed. He then hit him twice to the top of the head with a closed fist.

During the incident Hinchcliffe also threw a chair at his defacto partner of over a decade, who fled to the lounge room where he picked up a metre-long solid steel replica sword, hitting her in the shins before she fled to the kitchen where he drove the sword three times through a door.

Appearing via audio visual link, Hinchcliffe wiped away tears with the sleeve of his prison issued jumper as Magistrate Doug Dick handed down his sentence inside Bega Local Court on Tuesday.

Hinchcliffe was arrested on August 30 and charged with two counts of domestic assault occasioning actual bodily harm, common assault and damaging property after a dispute over a lost phone.

Hinchcliffe’s solicitor Ines Chiumento said he had “had enough” of his stepson’s behaviour, which led to the assaults, while Magistrate Dick said Hinchcliffe had “lost control”.

“According to the police facts she [his partner] was petrified,” Magistrate Dick said.

“She was so scared she ran and jumped over the back fence.”

Magistrate Dick described how Hinchcliffe then armed himself with an axe, which was “wrestled” away and thrown over a fence by the victim’s father who had arrived at the house with the victim’s brother.

Police were called and Hinchcliffe was “physically manhandled” to the vehicle after refusing to be led away.

“It’s not all about you,” Magistrate Dick said.

“I have to be very careful not to trivialise these issues.”

Hinchcliffe had been serving an eight-month suspended sentence for bringing a 23cm bowie knife into Nowra Local Court in early November last year.

At the time he had claimed to police he was carrying the knife due to being a witness in a murder trial.

Police later confirmed he had been subpoenaed, but had been informed the day before his arrest he was not required to testify.

He will be eligible for parole in May next year.