Conventional: Manufactured from stainless steel or nickel, are designed with customized aperture patterns tailored to the specific shapes and sizes of solder pads used in surface mount technology. Framed: Stencils feature a metal frame that enhances their stability and support. The frame provides rigidity and facilitates easier handling and precise alignment during the solder paste printing process. This type of stencil is commonly utilized in automated equipment. Frameless: As the name implies, lack a metal frame. They are frequently employed in personal hobby projects or PCBA prototyping.