Difference between revisions of "End-Scan Using the End Wall"

How to perform the end-wall end scan.

• Back to VTube-LASER
• See End-Scan Technique Research

We recommend this for increased precision where it is possible to strike the end wall. The End Wall method is also very useful for thicker wall tubes.

The advantage of this method is that it is less prone to outlier points. The disadvantage is that it is hard to aim at thinner walls.

For tube walls with high-reflectivity with burrs or saw marks, we recommend either a coating (see below) or the most precise End-Scan Using End Targets.

• Set System Options, Measure 2 Tab, "Maximum Number of LLP Points in String" to 12
• Set Measure Setup - LASER Tab: The LASER defaults to ON for CYLINDERS and END-SCANS.
• Set Measure Setup - LASER Tab: Cylinder stripes = 5 to 10
• Set Measure Setup - LASER Tab: End-scan stripes = 1 to 3
• Set Measure Setup = Scan Rates Tab: Set all rates to TIMER for all scan types.
• Set Measure Setup = Scan Rates Tab: Set the Scan Rates TIMER is set to 0 for all TIMERS.

• Align the scanner so that it touches one end wall of the tube.
• Be careful to not allow the laser reflection to strike you in the eyes.
  
  
• Attempt to hold the laser motionless when collecting the stripes to increase repeatability.
  
  
• Consistently place the line across the same area of the tube end from measure to measure.
  
  
• Press the green button until VTube-LASER is finished scanning all the end stripes.
  
  
• If you are scanning an end that is highly reflective, then coat the end with powder or white paint marker (See Avoiding Outliers below).

When scanning the end walls of highly reflective tubing with striations like shown in the image on the right, it is better to either cover the end with a coat of Maganaflux, Dynaflux, foot powder spray, white marking paint pen, or cover it with an end target to avoid outlier points.

The image below shows an end target plastic label attached to the end of the same tube. In this case, there are no striations visible.



See also Surface Paint for using a white paint marker for the prep of the end scan.