LED lights built in to the Ender 3 S1 Pro (and add-on for the regular S1) were making hot spots on the bed when shooting time-laspe and so need a bigger diffuser to soften the light.

Print Settings

Printer Brand:

Creality

Printer: 

Ender 3

Rafts:

Yes

Supports: 

No

Filament: Polymaker PETG Clear

Notes:

I printed 3 walls of .8mm with a .4 nozzle at 50mm/s. This diffuser is half the length of the light bar so you will need to print 2 of them.