Somehow I'd never used OSB. Had seen how it was made on Modern Marvels, and when I saw some in Lowes for $5+ for a 4X8 sheet, decided I'd try it for the halloween yard art for the grand-dau.
Never saw stuff so hard to cut, much harder than plywood. But, figured the sabre saw blade was old, and dull; looked OK, but tossed it anyway, and put on a brand-new, never used, blade. Still like to beat me to death cutting. Several days passed, and still not all the cutouts cut out.
Later stopped at Wally-World to pick up a couple of things for the dau-in-law, and saw some B&D Pirhana sabre saw blades. I'd gotten a Pirhana blade for my small B&D circular saw quite awhile back. Inexpensive, yes; work well, you bet. So decided to get a pack and try 'em; I didn't even know B&D made Pirhana sabre saw blades. They looked about the same as my other new blade, except for the color, teeth seemed the same. But cut like you would not believe. I cut out the last 3 1/2 cutouts a lot easier, and so much faster, than I did the first cutout alone. I have no idea what the B&D guys did, but whatever it was, it was good. If there's any B&D guys on here, ya dun good.
JOAT "I'm an Igor, thur. We don't athk quethtionth." "Really? Why not?" "I don't know, thur. I didn't athk."