Adjust the Inside Oval Rotation if you are getting Bumps or Feathers between where the blade plunges in and where it retracts from the V-Groove fallout on an oval V-Groove.

The Inside Oval Rotation field in the V-Groove configuration controls how much the foot block will rotate before cutting.

The inside cuts of the V-Groove are interior cuts, and cut into the fallout and not the matboard. They cut on the first pass of the V-Groove, and are cut in a clockwise direction.

If you have too little Inside Oval Rotation on an oval V-Groove, you will get a Bump, too much rotation and you will get a Feather. 

The blade returns to the outside of the starting point on the inside cut of the oval V-Groove, creating a Bump.

Increase the Inside Oval Rotation.

When making adjustments, click either the minus or plus button (-/+) at the end of the desired field about five or six times in the direction indicated. Click OK and do a test cut. Check the results of the cut and continue making adjustments until the desired outcome is achieved.

The blade returns to the inside of the starting point on the inside cut of the oval V-Groove, creating a Feather.

Decrease the Inside Oval Rotation.

The object will now cut correctly.

When making adjustments, click either the minus or plus button (-/+) at the end of the desired field about five or six times in the direction indicated. Click OK and do a test cut. Check the results of the cut and continue making adjustments until the desired outcome is achieved.

Select this topic to see information on the Outside Oval Rotation (V-Groove) to adjust the rotation for the outside of the oval V-Groove.