On a thin piece of copper plate, I cut out the plate with a
pair of shearers.

As seen above, I also drilled out the mounting holes to mount
the chiller onto the card.

Next, I brazed on a thin roll of 3/16" copper pipes onto
the plate. My first job ended up with me overheating the pipes and breaking
part of it.

So I did another one.

After brazing:

You see that the capillary tube runs into one end of the pipe
and the refrigreant flow exits through another end. For a more indepth on how
refrigeration phase change works and is built you can check out some guides