I've included a mini frame for this. It prints in less than an hour and the print can be superglued to the frame or I have been using glue dots that are mostly used in scrapbooking. The frame prints great with the satndard .2 print profile.
 

Print at 100% infill with a layer height of 0.08mm with a base layer of 0.24mm

The Model is 200x200mm in size
You may print at higher layer heights below the Min Depth of 0.48mm
The Max Depth is 2.2mm and the Actual Depth is 1.9mm

Filaments Used:
    PLA Bambu Labs Black Transmission Distance: 0.1
    PLA Geeetech New Purple Transmission Distance: 2.4
    PLA Bambu Labs Turquoise Transmission Distance: 1.7
    PLA Bambu Labs Jade White Transmission Distance: 5.9
This print uses 4 unique filaments

Swap Instructions:
    Start with Black
    At layer #6 (0.64mm) swap to New Purple
    At layer #9 (0.88mm) swap to Turquoise
    At layer #12 (1.12mm) swap to Jade White for the rest.