Weber, 42, competed earlier this year in the PDC's World Series of Darts events in Perth and Sydney and has starred on the DPA Australian Grand Prix circuit.
Queensland-born but now based in Melbourne, Weber won the Sunday's prestigious Oceanic Masters as he secured his World Championship spot alongside DPA AGP Order of Merit winner Loz Ryder.
Weber opened his Oceanic Masters challenge with a whitewash of Dino Cantatore and then edged out Barry Gardner before defeating Cody Harris 6-0 in the quarter-finals.
A 6-3 defeat of Jeremy Fagg put Weber into the final against top New Zealand ace Rob Szabo, who he defeated 8-2.
Weber took the game's opening five legs without reply before former World Championship qualifier Szabo shared the next four, but the tenth went to the 42-year-old as he sealed the win.
Szabo defeated Harvey Mayall, Robbie King, Kyle Anderson and Shane Tichowitsch as he reached the decider, with Tichowitsch and Fagg losing out in the last four.
Reigning champion Beau Anderson was knocked out with a 6-5 defeat to Fagg in the quarter-finals, alongside brother Kyle, Cody Harris and New Zealand's Craig Caldwell.
Kyle Anderson could still qualify for the World Championship through the PDC's ProTour Order of Merit should he pick up enough prize money in the final weekend of Players Championship events later this month to move him into the qualifying places.
2014 Firma Industries Puma DPA Oceanic Masters
Last 32
Shane Tichowitsch 6-2 Sam Bryant
Mick Lacey 6-3 Joe Moses
Koha Kokiri 6-1 Brent Lloyd
Craig Caldwell 6-1 Andy Williams
Robbie King 6-1 Ijah Coyle
Rob Szabo 6-4 Harvey Mayall
Kyle Anderson 6-1 Alan aird
Justin Miles 6-4 Tony David
Dave Platt 6-1 Dave Cobban
Beau Anderson 6-2 Peter Sutton
Warren Parry 6-2 Grant Dobson
Jeremy Fagg 6-5 Damon Heta
John Weber 6-0 Dino Cantatore
Barry Gardner 6-2 Brad Beswick
Cody Harris 6-3 James McKenna
Conan Ugle 6-3 Bill Aitken
Last 16
Shane Tichowitsch 6-3 Mick Lacey
Craig Caldwell 6-3 Koha Kokiri
Kyle Anderson 6-3 Justin Miles
Rob Szabo 6-1 Robbie King
Beau Anderson 6-3 Dave Platt
Jeremy Fagg 6-5 Warren Parry
John Weber 6-5 Barry Gardner
Cody Harris 6-5 Conan Ugle
Quarter-Finals
Shane Tichowitsch 6-2 Craig Caldwell
Rob Szabo 6-5 Kyle Anderson
Beau Anderson 5-6 Jeremy Fagg
John Weber 6-0 Cody Harris
Semi-Finals
Rob Szabo 6-1 Shane Tichowitsch
John Weber 6-3 Jeremy Fagg
Final
John Weber 8-2 Rob Szabo
The 2014 DPA Oceanic Masters was supported and sponsored by: Puma Dart Products, Firma Industries, Bickley Irrigation, Portway Contracts, suburban Streetscapes, Choice Industrial Training, DriveTrain, Team Maximum Pumps Australia, Bay Finance, Choice Industrial Training, Truck Centre WA.