A modification of another excellent Mandala I found online. I found layering it was perfect. I used taped 2.7mm project board for the carved areas and there is an added disk from 7.2 mm Laun for stability.
On the backing disc - 7.2 mm luan - up the power to 75%
and on the smaller discs watch carefully for fire.
Also if your ply is waterproof hit the tape with water soap vinigar solution and it ill slide right off the very detailed bits.
First upload -