of the Raspberry PIs were observed and recorded. The data showed that throughout the benchmark test, the TEG- powered Raspberry PI3 stabilized to a temperature a few Celsius lower than the passive cooling Raspberry PI3. The power produced by the TEG was also analyzed to measure the possibility of the fan having self-sustainable capabilities. Currently, using only TEG to power the fan isn't enough to be completely self-sustainable because it lacks enough energy for the initial startup of the fan. But, with the implementation of an energy accumulator, it would be possible. The power generation of TEG is given as: where is the power generated by TEG, is the thermal resistance, and is the temperature from TEG. Based on the result, the thermoelectric generator active cooling has been shown to effectively decrease and maintain temperatures that is comparable to commercial usage of passive coolers. Near Immersion Active Cooling (NIAC) Near Immersion Active Cooling, or NIAC, is a thermal management technique that has been recently researched in an effort to reduce the amount of heat accumulation generated by Wire + Arc Additive Manufacturing, or WAAM (a metal 3-D printing technology). NIAC utilizes a cooling liquid that surrounds the WAAM within a work tank and increases the water level when metal is being deposited. The direct contact with the liquid allows for quick withdrawal of heat from the WAAM, decreasing temperature by a significant amount. In a 2020 experiment, researchers wanted to discover the feasibility of using the NIAC and to test its cooling capabilities. The experiment compared the effectiveness of mitigating temperature generated by the WAAM between natural cooling, passive cooling, and near immersion active cooling. Natural cooling used air, passive cooling used a cooling liquid that stays on a fixed level, and NIAC used a cooling liquid that rises based on the actions of the WAAM. The following tests were used to measure the feasibility of using NIAC: Thermal analysis: In the thermal analysis, there was a significant disparity of heat between NIAC and the other cooling types, with NIAC cooling the technology at a much faster rate. Geometric quality: For the geometric quality of the walls, NIAC had the slimmest and tallest wall which shows tough durability of the WAAM when using active cooling. Porosity assessment: The porosity assessment showed that active cooling contained the lowest porosity level. A high porosity level has adverse effects on mechanical properties, such