Try a meat slicer blade. They're made in a variety of sizes and thicknesses, with a plain edge or with a serrated edge that's like a bunch of short blades ending with a short step towards the center to the start of the next 'tooth'. With a lathe it should be easy to make a pair of stepped steel washers to clamp one securely to a saw arbor.
What they all have in common is they *do not* spin at anywhere near table saw speed! I'd expect that high speed to burn and melt foam. Cutting cardboard with a knife edge blade would only work for narrow trimming so the off-cut can curl aside. Unlike foam it's too rigid to plow through. You'd need to have the blade go at it like a knife, just high enough to barely cut through. Same for if you're cutting rigid foams like expanded polystyrene or foamcore. Even with a setup that can successfully cut cardboard you'd run into the problem every blade cutting paper products has, fast dulling. Paper is very abrasive, as has been demonstrated by people putting paper circles on table saws and slicing through soft woods, plastics, and some other things. So rather than putting a meat slicer blade on a table saw, I'd make a dedicated foam cutting table using a three phase motor with a VFD to run it just fast enough to do the job. For cutting cardboard a rotary shear mounted to a table could be the ideal tool. Unfortunately the ones available now use a rotary cutter and a fixed platen or anvil or whatever it's called. You'd want one like an old Black and Decker 7975 Rotary Power Cutter. It has a round wheel below the blade so there's no drag on one side of the material. There are several examples of that old tool available to buy from various places on the web. On Friday, December 8, 2023 at 09:28:21 AM MST, fxkl47BF--- via Emc-users <emc-users@lists.sourceforge.net> wrote: i'm trying to find a slicing blade for a 10 inch table saw a blade that is smooth and sharp, no teeth for making smooth cuts in foam material and cardboard i guess if there's no such critter i could make one grind down the teeth on a cheap blade have any of y'all seen such _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
