Problems making a light cone

[brassovitski]

I’m trying to complete this tutorial:
Tutorial

But when I get to 4:48 inside the video, something went wrong. Once I have laid the texture on the cone, it has a strong black line on the perimeter, and the circle at the bottom. I can not delete these without gaps occurring in the cone, it does not happen in the video. What can I do wrong?

Lampeeksperiment.skp (391.1 KB)

[mihai.s]

View > Edge Style > Profiles (uncheck)

[DaveR]

Turn off profiles in the style edge settings.

[brassovitski]

Very simple when you know it. Thank you so much for the tip to you both.

[brassovitski]

Hej Jeg har prøvet denne igen. Modeling a Light Cone - Skill Builder - YouTube
(upload://4Jok2hx7pVvDfkQwiXMvpXTqVvu.png)
Men nu kan jeg ikke slette ringen i bunden af keglen uden at der opstår huller i keglen. Hvor i processen gør jeg noget forkert?

Vægspotlight Biltema Art. 46-3078 - 03.skp (1.2 MB)
I’M using Sketchup Make 2017.
Thanks in advance

[mihai.s]

Hide those edges, don’t delete them.

[Box]

You can’t delete the edge but you can hide it.