My friend ask me to want remove black part.but I don't know why this part appear

[happynewmind]

Hi.
I'm not a native English and I'm not good English also.
Sorry about that.

I was download from website that is stl file.
try to fix modeling but it show some dark part like burn.
I don't know why...

Can someone tell me please?

[TGS808]

If you go into the Lighting tab and set the Ray Bounces to be higher (try upping it to 12 from the default of 6) you should see that black go away.

Also, I'd suggest grabbing this:
https://grabcad.com/library/rj45-ethernet-plug

That model is in better condition than the one you have and should give you better results. I'd also suggest using the preset material "Clear Shiny Plastic White" as your starting point.

Also, I noticed that your file's scene units were set to meters. I'm don't know what your final goal is but when working with a model this small it may not be a bad idea to work in millimeters. Good luck. Let us know how it goes.

[happynewmind]

Hi TGS808.

Your reply was very helpful.
And I got much better result also my friend and me are happy.

I'm a game character modeler. Maybe I should study Cad.

[TGS808]

It's definitely better than the initial attempt. Glad it worked out and that you guys are happy with the results.