Lee is firmly on track to complete a golden winning double of Australia's two flagship summer events after seizing a commanding three-shot halfway lead at the Open with a sublime second-round 64 at The Australian on Friday.

The freshly crowned Australian PGA Championship winner ignited the big gallery following the game's new superstar when he holed out from a greenside bunker on the par-3 4th before continuing his birdie blitz with five more plus an eagle in a magical 11-hole stretch.

While he iced his round with a tap-in eagle at the last, after knocking his dazzling nine-iron approach from the pine needles to within a metre, the defining moment of Lee's round came on the par-4 16th.

About to putt, Lee pulled back, gestured to spectators to shush before resetting and draining a 12-footer, prompting a deafening roar from his legion of fans.

He offered a thank you to the crowd after surging ahead of Scot Connor Syme and American Patrick Rodgers on a truly cosmopolitan leaderboard.

"It's the person I am," Lee said of the colourful exchange.

"I have always been the centre-of-attention kind of person. It's nice and they're responsive and they react to whatever I do.

"It's always what I dreamed of as a little kid. Social media is a massive part of who I am and it's nice to get that big support.

"I didn't think that we could beat last week's crowd (in Brisbane) but we've nearly done it before the weekend. It's unreal and it has been really fun."

Jhonattan Vegas has found some form and is firmly in the mix at the Aussie Open. PHOTO: Getty Images.

Six different nationalities occupy the top-six positions following the second round..

At 12-under, Lee looked in control with his three-stroke buffer over Syme, who posted a 70 at The Lakes on Friday morning.

Chilean star Joaquin Niemann and Venezuela's Jhonattan Vegas are both eight under after a pair of 69s at The Lakes.

Rounding out the eclectic mix of contenders is Dutchman Lars van Meijel at seven-under.

Australian Jeffrey Guan (66, The Lakes) and Kiwi Sam Jones (67, The Australian) are among a bunch of players five shots adrift of Lee.

After being in danger of missing the halfway cut, heavyweight home hopes Adam Scott and Cameron Smith both survived the chop and will enter the final two rounds at The Australian at four-under.

"It's going to take my best to even get close and maybe even a little bit of help," he said.

"But there's still lots of golf left and I feel after how I played today I can still make a run at least."