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« on: May 19, 2019, 06:52:19 AM »
Put a clock in the tool holder and command moves and see if the moves are accurate, going by your measurements I would say they will be but still worth checking. If in dia mode the clock will move half of the commanded movement.
As TPS has said centre height and orientation of the tool is critical for accuracy but it will only see small variances over small changes in dia so not likely your issue here.
Was your initial cut the same depth as your others?
Rigidity of your setup may affect things and thus setting up may require two passes to get right and doing the pass at normal DOC for a finishing pass is usually best on a set up with less than optimal rigidity
One thing to also consider with carbide inserts, it is often not a good idea to take a depth of cut less than the nose radius of the tool although it will depend on the inserts geometry as to how much it will affect things in doing so.