epoxy

I have a board I'd like to access the test points on (see image). But they are covered with some kind of black/transparent protective material. Carefully scratching it with my knife leaves traces on it. I don't want to remove the heat shield if not absolutely necessary and everything has to...

Good morning, I am involved in a power electronics project where it is necessary to attach thermocouples to most possible points on a PCB. This includes tracks, plastic MOSFET surfaces (can reach 120ºC), and metal drain pads. I have read about several methods for this approaches. Summing up...