Regarding the WE100 vise, which comes in the Pro Pack 1:
If the knife is broad enough, you might get into the 13-15 dps range. This is because the angle goes down as the edge goes up. Adding a simple riser block between the blue base and the vise bottom would also lower the range of adjustment. I believe that upgrades from WE100 to WE120 include such a riser block.
Making a small degree change can usually be accomplished by raising or lowering the blade in the vise. For instance, moving the depth key from the bottom set of holes to the top, might make that sort of change.
If you have a digital AngleCube, you might consider this: Some of us have flipped our angle bar to put the detent dimples on the back side. This lets you make more variable settings. If you do this, remove the original detent screws and replace them with 10-32 screws with flat ends, so they don’t damage the bar when you tighten them.
If you don’t have an Anglecube, don’t expect to get angles as marked on the degree bar. These markings are for an edge which is 5/8″ about the vise.
If none of this works for you (I’m only offering an educated guess), Marc’s suggestion about the Low Angle Adapter is a good one. It’s something you’d want regardless of any upgrades you might make.
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