Converting a cylinderal model into a cone

Hi,
does anybody know how to convert a complicated model with cylinder shape into a cone ??
I know I can scale the top of cylinder to decrease upper cap but that works only for simple cylinder without anydetail , I want to convert a whole component into a cone ?

I don’t quite follow your question. Could you upload a skp file that illustrates what you want?

Sounds like tapering… Check Fredoscale :
https://extensions.sketchup.com/nl/content/fredoscale

thank you for concern, I want to turn this component into a cone one not cylinderal

still guessing if you don’t upload a picture, or better the .skp file to explain what it exactly is what you want…
7th icon from left is the upload button…

sample.skp (182.6 KB)

this’s just a sample , I cant turn this cylinder with horizontal / vertical lines into cone with regular scale !

Thank you so very much , fredo scale works perfectly fine

Why go through so many hoops ?

Use the circular base and a triangular face the full height and use follow me.

If you want the intermediate edges drawn faces and intersect…