Clive Palmer was back to his larger-than-life self at the Federal Court in Brisbane on Wednesday, joking with liquidators, playfully responding to journalists and replacing his now infamous sick bag with a health shake.

It was a noticeable turnaround from 24 hours earlier, when the former MP shuffled into court, stumbled over answers, forgot the details of significant business deals and warned of unreliable evidence because of side-effects from morphine.

"I stopped taking morphine last night, that's probably why I'm better today," Mr Palmer told the court on Wednesday.

He joked with the barrister quizzing him over Queensland Nickel's collapse when asked about how he raised money for one of his many legal battles.

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"We'd take a donation from yourself if you're willing to donate," he said.

And when it came to the media, Mr Palmer's spirited responses effortlessly flowed during a lengthy press conference following his day of evidence.

He even snuck behind one journalist mid piece-to-camera.

"I'm happy to be here, it's a lovely day," he said.

"It's good that I can provide so much employment for so many journalists.

"I want to thank you for your support, for coming here every day religiously waiting here.

"I'm sure that many fine relationships have been struck up over lunch.

"Who knows who'll be going out with who? I'll come along to the wedding.

"I won't stay too long because I do want to stay married and I have got an appointment for lunch."

Wednesday was the last of the hearings for Mr Palmer for the time being, however he may be called on again in a few months.

'I like to amass wealth, keep it'

Liquidators for Mr Palmer's failed Queensland Nickel are examining the company's accounts and assets and that of its flagship company, Mineralogy, after Queensland Nickel went under last year with $300 million in debt.

They are also trying to claw back $70 million paid by the Federal Government to help sacked workers in Townsville.

Clive Palmer leaves court with a sweet drink while leaving the Federal Court in Brisbane. ( AAP: Dan Peled )

Mr Palmer was ordered to appear on Wednesday despite claiming over the past days his evidence was not reliable because he was on morphine due to a bout of pancreatitis.

A statement read outside on his behalf likened his dragging to court to something which would happen in "Nazi Germany".

Food and drinks are seen being carried by Mr Palmer's staff. ( AAP: Dan Peled )

Despite the days of hazy evidence, Mr Palmer said his pancreatitis pain "resolved itself" about 4:00pm on Tuesday.

Once in the dock, despite clutching a sick bag again, Mr Palmer seemed back to his old self — there were no major memory lapses and he provided more in-depth, coherent and at times playful answers.

He boasted about his wealth and his ability to quickly raise cash, also sharing his dislike for parting with his assets, because he would not "normally sell anything".

"I'm a collector … I like to amass wealth and keep it," he said.

"You never know when a rainy day's coming and a liquidator could be knocking on your door."

Mr Palmer said he also had rich friends internationally willing to write him cheques of $100 million.

But when asked by a journalist outside court why they were not called on to pay sacked workers' entitlements, Mr Palmer said all taxpaying companies were eligible for government safety net scheme for redundancy entitlements to be paid.

Mr Palmer was more sprightly after days of being sick during evidence to the court. ( AAP: Dan Peled )

'Just my husband' signs cheques: Anna Palmer

Mr Palmer's wife, Anna Palmer, also gave evidence in court, as liquidators tried to determine if Mr Palmer acted as a shadow director ahead of Queensland Nickel's collapse.

Ms Palmer was a director of Mineralogy on several occasions, and she was asked in court who was authorised to sign cheques for Mineralogy.

"Just my husband," she replied.

Mr Palmer's wife Anna was only briefly questioned in court. ( AAP: Dan Peled )

Mr Palmer's nephew and former Queensland Nickel director Clive Mensink is the subject of an outstanding arrest warrant for repeatedly failing to appear in court, is on an extended overseas holiday, the court has been previously told.

Mr Palmer told the court last week that Mr Mensink was dissatisfied with how he was being treated in Australia and was contemplating not returning home.