Three layered bubble sheet cooling plate

A method of making a cold plate, comprising:

• stacking three aluminum sheets on top of each other while each of the three aluminum sheets is generally flat, wherein a middle one of the aluminum sheets is thinner than both a top one of the aluminum sheets and a bottom one of the aluminum sheets;
• bonding an edge of the three aluminum sheets together;
• bonding the top one of the aluminum sheets to the middle one of the aluminum sheets at a plurality of first locations;
• bonding the bottom one of the aluminum sheets to the middle one of the aluminum sheets at a plurality of second locations different than the plurality of first locations;
• supplying a pressurized medium between the top one of the aluminum sheets and the bottom one of the aluminum sheets to separate the top one of the aluminum sheets from the bottom one of the aluminum sheets and deform the middle one of the aluminum sheets.