So apparently I am doing something wrong with my jointer as I cannot get a perfect straight edge on a long, say 4' board. I have checked and reset my jointer, a 4" grizzly parallelogram. My out feed table is exactly the height of the knives all the way across the knife width, and the tables are parallel when checked with a four ft straight edge.
BUT, i always end up with a bit of taper on my beginning edge (the board measures, say, a 16th less wide for the beginningcouple of inches than the remainder of the board). And if I swap with the other end, then both ends have the taper!
Ive been told to keep the pressure on the outfeed table. When i do this its fine for the first four inches or so and then the board sort of rocks up onto the outfeed height and theres clearance on the infeed table and i dont get any more cutting action. If i keep pressure on the infeed table the there ends up being a clearance gap at the far end of the outfeed table and that messes up the cut, of course.
Is my outfeed table set too high? When i put a straight edge on it, it just touches the knifes as i rotate the cutter head thru.
Thanks for any help.
Martin