A patch application system is provided comprising a powder application booth. The powder application booth comprises a powder block to temporarily house the powder prior to ejection, a nozzle insert to guide the powder onto the screw, a support stand to adjust the powder block to the appropriate position relative to the screw for a desired patch location and size, a powder cup to deliver the powder to the powder block. A programmable logic controller electronically coupled to the micro air-switch valve controls the duration the air-switch valve remains open. The entire process may be automated by including a screw hopper to temporarily store a plurality of screws, a bowl feeder receiving the screws and delivering the screws to a rotating disk, wherein the rotating disk passes the screws through a heating element and presents the heated screws to the powder application booth.