Make a PCB with Solder Mask – Video Tutorial

This is a video about making a PCB with solder mask covered. To make a PCB with solder mask covered, we must prepare the tools such as heat transfer machine, hydrochloric acid, hydrogen peroxide, a laser printer, peel-n-press paper, PCB green oil, and ultraviolet lamp. Print the circuit to the peel-n-press paper, set the temperature of heat transfer machine at 180 centidegree and 300 second. The hydrochloric acid,  hydrogen peroxide and water are mixed together with proportion is 3:3:15. Then put the board into the solution. Then use the UV curable solder mask ink to mask the PCB. Here is the video: