I want to find out if the manually selected features in ArcMap can be the input to a ModelBuilder tool. If not, is it possible to copy or export selected features in ArcMap using ModelBuilder? Once in ModelBuilder, the data will be manipulated and exported to a dwg file but I first need to figure out how to get the selected features in ArcMap as the input to ModelBuilder.
Yes, as long as the input is a Feature Layer or Table View, selections will be honored by most geoprocessing tools including those within models.
You can use a feature layer as an input to a model builder tool, just like you can do this with other ArcGIS tools. Layers memorize the selections and the definition queries.
Once you have built your model, right click on your input and set it as a model parameter. Save your model then open it (not Edit, Open). You will have a combobox where you can enter your layer. It will run for the selected feature.