That's a clever idea!

For the snap-in? The inner rectangle is the hole, the outer top loop is cut to a depth of 1.5mm thickness so the retention arms will hold properly, and the top bit is chamfered to allow clean printing.

This might help: https://www.youtube.com/watch?v=mIVV7a7IOoQ

thank you

Just note that I do the walls attached to the base on mine (and by surveys only about 1/3rd of people do), so if you don't but you want to save some time you could do a height range modifier above your translucent elements to crank the layer height up to 0.28 for your walls.