Thermal and stainless steel heat guidance tests are applied to the ointment and Cooler to test the thermal release between brass and stainless steel and brass with solder cream. Just one side is the Cooler side, then record each temperature value to Overall heat transfer coefficient (U) and the Thermal conductivity (k) value from the trial. To find the heat-leading value in brass, brass, solder ointment, only 1 side and stainless steel. Found that brass apply solder cream 2 sides with a value of U = 534.14 W/m ^ 2 °c k = 5.70 W/m °c brass oiled 1-sided solder cream with U = 398.57 W/m ^ 2 °c k value that apply cream k = 5.86 W/m °c Non-lip Cream k = 3.50 W/m °c and stainless steel are U-split components u = 371.29 W/m ^ 2 °c U overall = 437.32 W/m ^ 2 °c k value = 18.63 W/m °c