Polyimide stencils for PCB rework are designed stay in place and can accommodate space/traces down to less than 1 mm. Standard stencil thicknesses are 0.004" and 0.008" with an aspect ratio of 1:1. Are designed to peeled away from their adhesive backing and be permanently placed onto the PCB site area to be reworked. Are cut with high-precision lasers. Said to eliminate problems of keeping the stencil in contact with the PCB, releasing the stencil from the board, and cleaning. Have 1:1 aspect ratios and are said to print solder paste consistently. Come in packages of 10.

BEST Inc., www.solder.net

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