The evaporator coil is made of 12mm copper pipe which I capped and filled
with sand to prevent the pipe from folding when bending it with a small radius.
First, I capped one end of a 1.5 meters long piece of 12mm copper pipe.
Capping the copper pipe
Then, I filled the pipe with sand to prevent folding and knicking
Bending the spiral around a piece of wood.
Since it was impossible to bend the last few centimeters of the pipe, I decided
to cut them off with the good old Dremel. I did this with the sand still in the pipe.
I should not have done this, since the cutting disc produces a blast of high-velocity
sandgrains as soon as it hits the sand. It is extremely painful when the sand hits you.
Remove one of the caps and the sand first before cutting the pipe.
Cutting off the straight ends.
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