After watching a video on the subject, I thought I'd try jointing some 3/4" thick white oak boards on my router table. The boards were about 30" long x 6" wide. What I got when I butted two jointed boards together was a gap in the center that was about 1/32" to 1/16" wide. It did this to all four boards I jointed, plus a couple of shorter boards. The gap was just not as pronounced on the shorter boards. I reviewed my set up over and over, making sure the bearing on my bit was flush with the shimmed out outfeed fence. I even took my fence apart and made sure the "L" shaped metal fence mount was straight and true, and the fence boards themselves were same. The bit I'm using is a 1" bearing guided flush trim bit with 1/4" shank. Could the problem be the 1/4" bit is flexing and I need a 1/2" shank bit? I know the ultimate solution to my problem is to buy a real jointer, but that could be a long way down the road.
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Problems using Router Table as a Jointer