HOW CAN I MAKE GAS(PETROL) TANK IN CATIA?

I will try to describe simply. I hope that it would help for starting point and you canmake better. All dimensions are example. Ive just tried to show way of it. If you remember iam using CATIA V5 R21 , if you have recent versions like R20, 19 ,18 etc you wouldnt open my CATPart so ive added step version of my data too. ( of course It doesnt have product history :) )

Answered with a tutorial: https://grabcad.com/tutorials/how-can-i-make-gas-petrol-tank-in-catia

You should use GSD (generative shape design) workbench. There are various possibilities. If you are a beginner you should use SWEEP command. Here is a tutorial which shows, how it works http://www.youtube.com/watch?v=g0dT22Fxldo
With MULTISECTION SURFACE and FILL you will get more complex surfaces.

greetings

I was trying to follow this tutorial..in step8 my mirror command is not active. Any suggestions?