I've been jointing 8' x 6" 6/4 maple that I plan on making into cabinet doors and have been experience a bit of waviness in the wood after my passes. This sent me on a wild goose chase over the weekend of re-calibrating my jointer thinking that something was out of wack with my blades or tables. Ultimately I did make some adjustments to the blades, though nothing was severely off to begin with. While the waviness is a bit better, it is still definitely present. The thing is, the flatness of the edge after jointing it is actually great and I was at .0015 when spot checking it with a feeler gauge against my straightedge (excluding the minimal snipe at the end). Is waviness normal in harder woods? It was pretty pronounced when I was face jointing and I was taking down the wood a bit trying different settings and technique to correct. I had my best results with a painfully slow pass taking off about 1/32 and the below picture is of the edge that I measured against.
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