I’m new to grasshopper (just started today). I created a simple sweep of a rectangle that generated a closed brep,then I used the “mirror” command to mirror the part and now I would like to join the 2 Breps, but I can’t. I’m sure it’s very easy for you, so why don’t you reveal the mystery to me? 
THX
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Oh thank you very much, I hadn’t thought of that
hello again @Quan_Li , could you try using the “Solid Union” widget in the file I attached? It doesn’t let you connect both geometries (sweep and mirror) but either one or the other. What’s wrong?
Where is the file?
You need to hold SHIFT to drag additional wires to an input.
(CTRL + drag will remove an existing wire from an input)
(CTRL+SHIFT will grab all the wires going in or out and let you move all of them at once)
ah,as I said I started yesterday Thank you very much
In the first post,but now i understund, i need to hold SHIFT to drag additional wires to an input,thx