"All the setting gauge does is set the height of the knives relative to the cutter head. If trhe head is not quite level with the tables then you'll get the results shown."
There is a gap of 1.2mm between the outfeed table as is and the barrel of the cutter head.
The knives have small springs under them. When using the supplied knife setting jig I took great care to set the height of the knives in the cutter block, repeating the process several times, just to be sure.
The knife setting jig is quite substantial isn't a cheapy bit of pressed aluminium.
Using the moving ruler forward method.
The flat batten positioned on outfeed table next to fence crossing over cutter head to infeed table.
Knife 1 moves batten forward onto infeed table by 2mm.
Knife 2 by 5.5mm.
Knife 3 by 4mm.
Batten positioned opposite side of tables.
Knives 1,2 and 3 don't move at all.
Part of past communication with Axminster engineer on advice on adjusting the machine.
When the wood moves forward 5mm, this means the blade at it's highest point stands roughly 0.10mm proud of the surface of the outfeed table.
If you end up with the wood moving 4mm on one side and 6mm on the other, it's unlikely you will notice this when operating the machine.
As long as the blade is slightly higher than the outfeed table, the machine will work. If it is too high the material will be cut but won't be perfectly flat.
One thing I've been aware of but I didn't think was crucial, was the infeed table is very slightly askew in relation to the cutter head.