I see the tutorial, in Altium, click the design under the layer stack manager, pop-up layer stack manager, double-click the top layer or core or bottom layer can set some parameters, those parameters can not be set?
This is not set up, only in the proofing requirements. In addition, pcb industry also has line specifications. Usually the board does not have special requirements will do 0.35um.
Do not set up, with TXT document, named readme can be. Another copper thickness is generally 35um instead of 0.35.
The thickness of the copper layer is used to set the thickness of each layer of copper, the default is 0.03556mm, which is 1 ounce, core is set the thickness of the substrate, if it is multilayer will have Prepreg, the default substrate thickness is 0.32004mm, these are all you can change to the value you actually need. Of course, you can not use the additional requirements of the document to give the plate specification.
