Hi Mira,
I am an industrial designer by profession, also a CAD modeler and also a product researcher.
I am good with industrial materials like steel : SS304, SS316, Aluminium 6061, Aluminum 6063, Mild Steel 1020, Carbon Steel and etc.
As for plastic, I understand basic criteria for plastic injection, considered draft angle 1-3 degree for de-mold purposes and extruded plastic components like plastic pipe or plastic angle bar or plastic channel, some industrial products they will go for FRP - Fiberglass Reinforced Plastic.
As to select the plastic profile for the design, it will take a bit of time to covert the wood component to plastic part but I like to design desk and table especially for the use for household, office and for kids.
I guess it would be an added point for me I have passion in furniture design.
Thanks