Is learning Surface Design is enough for Plastic Design ?

To design a Plastic model or part we can design in GSD then we can give it a required thickness. So, what is the use of Mold Tooling Design in CATIA. Please explain it in detail.
2 Answers

Learning how to use any program does not equate to having the knowledge to design plastic parts, or tooling which will be manufactured.
There is a large difference between making a CAD model, and making a CAD model which is ready for production.
This website has some great information for anyone designing plastic parts that will be mass produced: https://www.pitfallsinmolding.com/index.html

I agree with FredSWUG's comments about designing plastic parts. There is much more to learn about plastics and CATIA.
Regarding CATIA's Mold Tool Design product; The tools in this product make the design of a part and/or mold much easier and quicker than the GSD set of tools. The GSD tools are good for the ergonomic, styled shapes and surfaces. But adding ribs and bosses and adding draft taper and fillets are much better done with other tools than GSD. The best method involves using several CATIA products.