https://cad.onshape.com/documents/ea2642cc745c385400964073/w/fd7222e4452f5bfbcd9b31fa/e/b824a3f6b0ca

I cannot make a drawing of this heat exchanger.
I cannot make a drawing of this heat exchanger. I think that reason is because the parts are not touching or haven't been merged together. Please show me the steps such that I can create a drawing of these parts a one part.

I cannot make a drawing of this heat exchanger.
I cannot make a drawing of this heat exchanger. I think that reason is because the parts are not touching or haven't been merged together. Please show me the steps such that I can create a drawing of these parts a one part.