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How-to Helps Measure Surface Profile

Monday, May 6, 2013

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A hands-on guide to accurately measuring surface profile depth is the latest in an original series of video tutorials presented by KTA-Tator Inc. and produced by PaintSquare.

Narrated by KTA-Tator president Kenneth A. Trimber, How to Measure Surface Profile Depth (5:07) shows the viewer how to use Testex Press-O-Film Replica Tape and a spring micrometer to gain an accurate determination of a surface profile before beginning a coating project.

Measuring Surface Profile
Images: Technology Publishing Co. / KTA-Tator Inc.

How to Measure Surface Profile Depth demonstrates use of Testex Press-O-Film Replica Tape and a spring micrometer before beginning a coating project.

The title is the newest addition to Coating Inspection Instruments: A PaintSquare Video Education Series, available exclusively through

The series is co-produced by KTA-Tator and PaintSquare and will be rolled out throughout the rest of this year.

Surface Profile How-to

Determining whether a surface profile is "rough enough or too rough" is important to the quality of the coating job that follows, Trimber notes. The tape itself also creates a permanent record of the profile achieved.

The tape used in the demonstration complies with Method C of ASTM D4417, Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel.

Trimber discusses the three types of tape available (coarse, extra coarse and extra coarse plus) and when to use which one (or two) for various applications.

Tesstex Press-O-Film Replica Tape

The tape in the demonstration complies with Method C of ASTM D4417, Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel.

The tape is used to create a reverse replica of the surface profile, which is then measured with the spring micrometer. Trimber explains how to apply the tape, obtain the profile, and measure the result with the micrometer.

KTA Inspection Series

The Coating Inspection Instruments series teaches viewers how to work with a variety of instruments to achieve the best project results. All videos are available free in the PaintSquare's Video Learning Center

Previously released in the series are:

  • How to Determine Blast Cleanliness - SSPC VIS 1 Guide and Reference Photographs
  • How to Measure Wet Film Thickness (using the Nordson Wet Film Thickness Gage)
  • How to Measure Dry Film Thickness (using the PosiTector 6000 F Series gage)
Measuring Wet Film Thickness How to Measure DFT Ken Trimber

Previous titles in Coating Inspection Instruments: A PaintSquare Video Education Series are, from left: How to Measure Wet Film Thickness, How to Measure Dry Film Thickness, and How to Determine Blast Cleanliness.

Future installments focus on the use of:

  • DeFelsko PosiTector 200, SPG and UTG probes;
  • Fischer Dualscope FMP100;
  • PATTI adhesion testers for steel and concrete;
  • Thermometers;
  • Tooke Gages;
  • SSPC-VIS 2 and SSPC-VIS 3;
  • Adhesion testing;
  • Moisure meters; and
  • Rilem Tubes.

The series is hosted by Trimber, who has been with KTA since 1968 and has more than 40 years of experience in the industrial painting field. He is a past president of SSPC and chairman of its Commercial Coatings Committee.

Trimber is an SSPC-Certified Protective Coatings Specialist, an SSPC C-3 Supervisor/Competent Person for the Deleading of Industrial Structures, and a NACE-Certified Coatings Inspector Level 3 (Peer Review).

Watch the videos.


Tagged categories: Air abrasive blast cleaning; Certifications and standards; Coatings education; Dry Film Thickness (DFT); JPCL; Kenneth A. Trimber; KTA-Tator; Metal cleaning; SSPC; Surface profile; Testex; Thickness gauge; Video; Wet film thickness

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