Printed with Glow in the dark filament 0.3mm supports are not required.
There are 2 versions of the cover, one has stand offs incase you want to print it a solid color.
For printing it in glow in the dark, use the cover called “Dual Rocker Light Switch Cover Use With Insert”.
If you just print the cover with glow in the dark filament it will be semi transparent and it will look “dirty” because it shows the junction box underneath. Print the insert in white and place it inside your glow in the dark cover, this way it will look nice and clean.
The author remixed this model.
Made it smaller and made an insert.