Dear All,

We want to remove the outside part (the grey area) of a surface as shown in figure below. The trim tool is the whole faces of the solidbody (green one).

We recorded a macro for the manual process. But it only shows two APIs (pretrimsurface, posttrimsurface) while other operations are omitted. Therefore, we have no idea about how we can achieve this process automatically.

Can anybody help us to figure out what the internal process of Solidworks is?

Many thanks for your time and expertise.