Settings for cutting card

Hi, very new to this, just got an Ortur Master 20W and have downloaded Lightburn (version 0.9.14) used on a macbook with OS 10.13.6.

Trying to cut 2mm card and having great difficulty in achieving this and wondered whether I am entering correct settings. Have tried many different combinations of settings for power and speed but the best I have got is about half way through the card (see pic)

Any help/advice would be appreciated, thanks.

With a diode laser you’re going to have to go really slowly, or add air assist, and probably both. Air assist is injecting air into the cut, using something like an inflation needle for a basketball and an air pump. If you do that, the cutting effectiveness will go up considerably.

Many thanks, will try this.