Hello, I'm brand new to Alibre and I can't seem to figure out how to make a rail around the edge of a square tube. Basically I have a 1" steel pipe with 1/8" radius corners. I'm trying to create a triangular sweep around the bottom outside edge of the square tube. I'm trying to use the sweep tool but every time I select my triangle (1) and then select the square tube edge (2) to generate the sweep, the button turns red and nothing happens. I'm sure I'm probably doing this the complete wrong way. I'm looking for the correct steps to complete this or guidance on how to do this. I've also included a picture (3) of what I'm going for, I know my sketch doesn't match exactly, just trying to get the concept.