The Exterior Backup for V-Grooves controls where the Blade Plunges into the Matboard (not the Fallout) on the Exterior Cuts of the Outside Cut of the V-Groove. The Exterior Cut is where the Blade Plunges/Retracts from the Matboard (not the Fallout). If the Exterior Backup on the Outside Cut of the V-Groove is cut Too Long, Decrease the Exterior Backup. If the Exterior Backup on the Outside Cut of the V-Groove is cut Too Short, Increase the Exterior Backup.
| The Exterior Backup Controls Where the Blade Backs up Before Plunging into the Matboard on the V-Groove Exterior Cuts |