Stencils Unlimited offers prototype and production selective solder fixtures. Our production selective solder fixtures are made with heavy-duty (Electro-Static Discharge) ESD composite, pressed fibre, thermoset plastic which offers extreme strength and excellent electrical and thermal properties. Our prototype selective solder fixtures are made with high Tg FR4 (PCB material) to reduce cost and shorten the lead time. They recommended for prototyping and short runs.