I'm tasked to design a new oil pan that will be manufactured from 1/8 sheet aluminum.

the sections will be sheared and welded, I'm not sure how I would go about creating a drawing from a model that contains many different sections?

Would it be best I start a model in sheet metal or weldment?

this project is out of my normal modeling skills thus a step learning curve.

Any advice and help would be most appreciated!

thanks.