How to Fix Shading Issues in Blender 3D

Extremely helpful!!!!!

Fabulous...straight to the point and worked a treat....

thanks man very helpful

thank you <3

You saved my "life".

Thank you!!!

You are life saver!!! Thank you!

I didn't know there was a weighted normal modifier. This helps out alot. Thanks mate!

Exactly what i need, thanks

Thanks a lot, ur a genius!

Other method is to use transfer normal like how Josh Gambrell do. In my case, these issue happen after I triangulate and join meshes (even though before join meshes everything looks flawless).