An accused far-right anti-Islam extremist who allegedly planned to bomb left-wing groups in Melbourne wants to represent himself in court after sacking his lawyers.

Phillip Galea, 33, on Thursday told the Victorian Supreme Court he wanted to represent himself at an upcoming hearing about whether he is mentally fit.

"Your Honour, I'm aware that a man who represents himself is a fool for a client, but in some cases it's better off than a stooge," he told Justice Lex Lasry via video link.

The judge has urged Galea to seek legal representation.

"I can't compel you to be represented but I urge you to reconsider," he told the accused.

"It's all very well to refer to the cliche about a fool for a client, but there are advantages and benefits to being represented which simply won't flow to you if you're representing yourself."

Lawyer Allan McMonnies said Galea had terminated his services two days ago.

Galea had also sacked a previous team of lawyers.

"But I don't want to leave him with no representation," Mr McMonnies told the court.

Galea is due to face a hearing to determine whether he is mentally fit to stand trial.

But he says the hearing should not take place.

The Braybrook resident is charged with making preparations for terrorist attacks against properties occupied by Melbourne anarchist groups between November 2015 and August 2016.

Galea is also charged with collecting or making documents to prepare for terrorist acts between September 2015 and August 2016.

He was due to face a pre-trial committal hearing before the Melbourne Magistrates Court in August, but concerns about his fitness to stand trial led to his case being referred to the Supreme Court.

Police have accused Galea of preparing to target various locations inhabited by the Melbourne Anarchist Club and Melbourne Resistance Centre.

He allegedly told an associate he wanted to cause as much devastation to his targets as possible in a coordinated attack, according to a summary previously released by the Magistrates Court.

Galea also allegedly ordered potassium nitrate for smoke bombs, aligned himself with right-wing groups True Blue Crew and Patriots Defence League Australia, and researched how to make improvised explosive devices.

Galea, who has been in custody since August 2016, will face a fitness hearing before a jury on February 6.