New jointer and ME too! Help please.
EDGE jointing question:
Just bought a new jointer / planer-- Cuttech 8" wide with spiral carbide knives.
I believe I have it set up correctly. Glued up a simple table top and the 3/4" boards all fit smoothly and tightly just laying there before the glue up. NO gaps, flush. So, figured I had the jointer figured out. That was with walnut. I doubt this matters but changed over to cherry and ran through the same basic steps: face joint the concave face till flat, edge joint one side, go to planer and make parallel face side, joint 2nd side.
With first two 3/4" boards after completing what I thought should be a good process found I had about 1/32" space from a BOW in the long direction on one board. Specifically, looking down at the two boards as they lay edge-on with each other, about 36" long, the ends touched but there is a long bowed gap between the boards narrowing to zero as approaching either end of the long dimension. I was best able to view the concavity of this edge by placing a straight edge over the edge and view the gap. Looks the same with the straight edge as with the two boards edfe-facing each other.
NOTHING I could do was able to remove this gap, including:
1) running multiple more times through the jointer paying special attention to keep pressure mostly on the infeed table, never over the knives, transferring pressure to outfield table only at end of the cut.
2) Table saw straightening: using factory edge of a piece of long plywood I screwed the board down with this concave board facing the saw blade and the other edge parallel to the factory edge, ran through the table saw, then jointed the face cut with the saw.
On another piece of cherry I followed a similar process and found one edge was concave and the other convex. The convex side jointed fine and I was able to get a flat face down the entire 40" length. Tried multiple passes with jointer and can NOT get the concave face flat. What can I be doing wrong? Driving me nuts.
Last edited by schreib; 05-06-2018 at 06:46 PM.