The 25-year-old from Haverfordwest triumphed 2-0 taking just 34 minutes to win 11-3, 11-5 against Coll in their Group B decider.
Makin had reached a career-high ninth in the world in the latest rankings and celebrated by seeing off the New Zealander, ranked five places above him.
Makin, seeded seven for the event, will face fourth seed Karim Abdel Gawad in his semi-final at the Mall of Arabia on Friday.
— PSA World Tour (@PSAWorldTour) October 1, 2020
British No I Maki has now beaten the two men who contested the World Championships having beaten reigning champ Tarek Momen of Egpyt in his opening group game.
After losing to Marwen ElShorbagy in his second group game on Wednesday, Makin had to beat the Kiwi to progress to the last four.
But he produced one of the performances of his career to beat Coll in convincing fashion.
Makin is only the second Welshman to compete in the prestigious event, emulating Squash Wales’ current National Performance director David Evans.