A man who held up a Hamilton pool hall has been sentenced to nine years jail - but may face further prison time after swearing at the sentencing judge.

Tukino Te Takinga Te Rangi, known as Tuki, was found guilty on a charge of aggravated robbery after a jury trial in Hamilton District Court.

Te Rangi, together with his partner Laurissa Huirua Tukaki, 22,  planned the aggravated robbery at Waikato Snooker and 8 Ball Club well in advance, the court heard.

A stolen car was used to drive them to the scene, on Liverpool St on  March 6, while they parked a legitimate getaway vehicle nearby.

Access into the club is by swipe card or by a staff member inside.

About 9pm the trio pulled up to the club with Tukaki getting swiped in by a staff member. She then bent over, in a fake attempt to adjust her shoes thereby leaving the doors open for Tukaki to enter.

Tukaki  then stormed into the club wearing a balaclava with Tukaki armed with a sawn-off shotgun.

Two female staff members were behind the bar and about 20 patrons inside.

Tukaki jumped onto the bar and threatened the female staff members at gunpoint.

About $16,000 was taken in the heist.

Tukaki has already been sentenced to two years' and 10 months' prison for her part in the robbery.

Te Rangi's counsel Russell Boot asked Judge Merelina Burnett to begin her sentencing about the 6 year mark, while crown prosecutor Tini Clark said Te Rangi had shown no remorse and had not admitted his offending and asked for an 8 1/2 year starting point.

Judge Burnett took into account Te Rangi's lack of remorse or insight into the offending, she took the 8 1/2 year starting point then added six months for his criminal history.

She offered no discount as there were no mitigating features.

As Te Rangi - who appeared via automatic visual link from Mt Eden Prison - was about to leave the cell he then allegedly called Judge Burnett a "f****** bitch" which she heard.

Judge Burnett then recalled the matter and initiated contempt of court proceedings which carry a maximum sentence of three months' jail.

Te Rangi will reappear in two weeks' time on the contempt charge.

- © Fairfax NZ News