I have sketched a profile of a tab that I would like to make a block and then add it to a library I am creating. I want to be able to add this block to a sketch of a feature. the problem that I am having with this is that solidworks tells me that the sketch is not closed. is there a way to use a block to close a sketch?
Create a library feature. I have to warn you if you haven't done this before it can get tricky. I could type pages on the practices of this but for your instance here make sure you don't use the vertex for the cut extrude because it will not be able to be seen later for a reference. Instead dimension the cut extrude where you want it.
In the first picture I am creating the tab that I want to use as a template. You highlight the features and click "Save As" and as a library feature.
From here down is your new part where you want that tab to insert. I used a sheet metal reference so it must be a sheet metal part for this tab.
Edge 1 reference is from a midpoint reference to the original parts edge, now it wants a reference to a similar edge.
Face1 is an up to surface reference.