Is it possible to fill back in a milled out area ? This thread is inactive and closed by the PTC Community Management Team. If you would like to provide a reply and re-open this thread, please notify the moderator and reference the thread. You may also use "Start a topic" button to ask a new question. Please be sure to include what version of the PTC product you are using so another community member knowledgeable about your version may be able to assist.
I guess there are many approaches; here's one, assuming you've got a cube with a simple milled pocket. Select the milled face (yellow in the screenshot), right-click and click ""Align"", choose a reference face as indicated by the second arrow.
Another approach is to cut the pocket. Select one of its faces, right click and choose ""Cut faces"" in the context menu. In the dialog, click ""Rec. features"" and reselect one of the faces in the pocket. Click OK.