I have been planing / jointing rough sawn wood recently and edge joining it to create a larger board. Every single time the finished board ends up with a big twist (diagonally opposed corners too low). I need help!
Here are the details: Wood I’m using is redwood (pine). Individual board sizes are 40cm long by 10cm wide and 2.4cm deep. I am edge joining 5 of these using kreg pocket holes and clamps to make a 40 x 50cm board. I’ve noticed the individuals boards have a slight twist and have been able to remove most of this on the planer (jointer). I then feed it through the thicknesser (planer). I obviously get the edges straight and square too. I suspect there is enough twist left in the boards so that it causes the overall board to end up twisted but I can’t work out why the twist would be so subtle in the individual boards and so exaggerated when joined. I use cauls when joining and the wood is left in my house to climatise for a few weeks beforehand.
I’m totally stuck so would appreciate any help!