Acrylic Dice + Laser

Looking for some advice here; I’m running a 2W and/or 6W diode laser on my MPCNC and have stepped back into trying to conquer Acrylic dice. Black is no problem; in fact they turn out pretty well perfect, but any other color is exceptionally difficult.

Anyone have experience with white (or other color) Acrylic dice and a diode laser? I see a lot of amazing results with a 40-80W CO2 laser but that’s not in the budget atm. I’ve tried multiple speeds and multiple masking tapes and techniques but nothing is looking good yet.

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