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Refresh my memory...if a jointer is making cupped boards (both ends touch a flat surface, but the middle doesn't), what's the likely cause?
I noticed this evening that two light passes edge jointing a 21' long board left about 2 sheets of paper's worth of gap in the middle when the edge was placed on a flat reference surface. I was tired and didn't feel like debugging it tonight, but I suspect the tables aren't coplanar any more. (Too much moving it is my guess...even though it's on a mobile base, the carpeted shop floor makes it tough to move. Can't help but pull on the tables some.)
I'm pretty sure my technique is correct, so I figure it's gotta be the machine. I haven't checked out the tables since I first assembled the jointer a bit more than a year ago. I've got a good 4' Veritas straightedge, although I don't have any real feeler gauges. If the tables are coplanar, I think I know the rest of the setup process. If they're not coplanar, then I'll be heading into unfamiliar terriroty. Any jointer table setup tips?
I noticed this evening that two light passes edge jointing a 21' long board left about 2 sheets of paper's worth of gap in the middle when the edge was placed on a flat reference surface. I was tired and didn't feel like debugging it tonight, but I suspect the tables aren't coplanar any more. (Too much moving it is my guess...even though it's on a mobile base, the carpeted shop floor makes it tough to move. Can't help but pull on the tables some.)
I'm pretty sure my technique is correct, so I figure it's gotta be the machine. I haven't checked out the tables since I first assembled the jointer a bit more than a year ago. I've got a good 4' Veritas straightedge, although I don't have any real feeler gauges. If the tables are coplanar, I think I know the rest of the setup process. If they're not coplanar, then I'll be heading into unfamiliar terriroty. Any jointer table setup tips?