These blades are designed to be used in an air powered jigsaw:

http://www.northerntool.com/shop/tools/product_200337844_200337844

Since the saw costs over $100.00, for a one-time job I'd suggest doing a little adapting so they'll fit in an electric variable-speed jigsaw. With a little creative grinding, they should fit a regular saber saw. Use the 32 TPI blade for the smoothest cut.
Jerry

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