Flash diffusers for Neweer Z1/Z2 flashes by Trinidad. 

I take no credit for their hard work and I'm simply re-uploading as I appreciate the model.

OP stated it's for the Neweer Z2S flash however, the flash head body remains unchanged between Z1 and Z2 models irrespective of camera brand choice. I printed this for my Z1N flash.

I found the flat diffuser slightly reduced how widespread the flash is and doesn't suit my personal needs.

My Print Settings

• Printer: Prusa MK4S
• Supports: Automatically painted organic supports
• Resolution/Layer height: 0.1mm
• Infill: Doesn't matter - it barely has any
• Filament:
  • Sunlu/Jayo Transparent PETG. I saw best success with this
  • Sunlu/Jayo White PETG. This diffused too much for my liking
• Notes
  • 3x2mm magnets worked (the 2x3 mentioned confused me a bit)
  • If you'd like to print it clearly (like glass) I'd suggest the following:
    • 2 perimeters
    • Reduced top/bottom layers (I used 5)
    • Aligned rectalinear fill paterns where possible
    • Fill angle: 0
    • Print slow (20mm/s)
  • Optional: to reduce potential stringing/travel enable “complete individual objects”.
  • Modifying top/bottom layers too much resulted in some misprints (ask me how I know)

OP Print Settings:

• Printer: Creality K1
• Rafts No:
• Supports:Yes
• Resolution:0.08mm
• Infill:50%
• Filament brand:Sunlu
• Filament color:Any
• Filament material:PLA+
• Notes:
  • Dome may need supports at center.
  • Flat does not need supports if flipped.
  • Add 2mm x 3mm Magnets
    Amazon: https://a.co/d/eeyJTx0