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Can I still do a manual measurement with the DJH VPro automatic measuring software?

Yes. A manual tool allows you to measure the same way you would with our older versions.

My software license is about to expire. What should I do?

Simply contact our sales team by phone or email, and we will be able to assist you in renewing your license. / +1(905)825-2750.

Can Galvanizing coats be measured using the DJH Film Thickness System?

Yes they can! By using our latest software, microscope and a secondary light source, you can accurately and repeatedly measure a galvanized coating by casting the light on a sharp angle toward the crater.

I just got my new Film Thickness System. When I try to export and measure a sample to Excel, I get an error message. How do I fix this?

Unfortunately, we can no longer provide our systems with Microsoft Office pre-installed due to Microsoft's new regional licensing policy. You can install a locally obtained copy of Microsoft Office, and this will allow you to export the measured samples to an excel template.

I am doing a measurement and getting an egg-shaped crater; what could be happening?

It could be that your borer machine needs to be recalibrated. Before sending it to DJH for the annual service and calibration, perform a quality check by drilling a crater on your Certified Standard. If the crater is not perfectly round, it indicates a misalignment in the borer machine, and you should contact our sales team.

I bored a crater and measured its film thickness, and the software threw a failed measurement. What could be happening?

The main reason could be the wrong contrast marker used on the sample. It is strongly recommended to use the silver marker for bright and dark colours and the black marker for light colours. Also, check for streaks and voids in the area covered with the contrast marker, as they tend to confuse the software.

What if the software cannot read a measure?

The software will not be able to pick up the layer differentiations on a color-on-color product (e.g., white primer on white paint) unless a secondary light source (ancillary light) is cast on a sharp angle toward the crater. Please contact our sales team for more details.

Can I measure heavily textured top coats and/or very rough substrates?

Yes, you can do it using the manual tool of the software.

I have a textured coating sample, and my crater is big and centered on the screen, but the software is still not reading the measurement. What should I do?

It may be possible that the size of the crater is too big, so it is recommended to reduce the size of the crater magnification as this also tends to reduce the size of the flaws in the crater.

I have done all the previous steps, but the software is still not reading the measurement. What else can I do to get an automatic result?

It could be that the light intensity is not well adjusted. The “Intensity” scroll bar on the bottom left corner controls the light intensity. The software uses the light from the “Process Light” scroll bar. By unchecking it and manually adjusting the light intensity process level, you might be able to get an automatic measurement.

I don’t have any more space on my Certified Standard to bore a crater. Who can I contact to get a new one?

Contact our sales team by phone or email, and we will assist you in getting a new one. / +1(905)825-2750

When should the Certified Standard be used?

It is strongly recommended to use it as a quality check regularly and after every borer bit change to ensure the accuracy of the borer bits.

Based on the coating to be measured, how can I choose the correct borer bit size?

There are three borer bit sizes:

  • FTS-BB-50M: Borer bit used for a coating range between 0 and 2mil (0-50 µm).
  • FTS-BB-200M: Borer bit used for a coating up to 8mil (200 µm).
  • FTS-BB-300M: Borer bit used for a coating up to 12mil (300 µm).
What happens if I use the incorrect borer bit?

Measuring with the incorrect borer bit will result in a failed and/or inaccurate measurement result.

What is the life cycle of the borer bits?

On average, the borer bits will last about 800 drills, but their life depends on the type of material being drilled (e.g., for steel, it will last fewer drills, and for aluminum, it can last more). After the 800 drills, it is recommended to perform a certified standard test every 100 drills to check its accuracy.

My borer machine has reached the calibration due date and needs service. Can I do the service myself at my facility to avoid sending the machine and stopping the production line?

Unfortunately, the annual service and calibration of the Borer Machine must be done by DJH; it requires specialty training, tools, and fixtures. During the service, we replace the spindle bearings, as they have a set life span; we clean and lubricate the machine, replace any worn parts, and recalibrate the alignment of the spindle assembly.  We offer Loaner Borer Machines that can be used while your machine is being serviced; that way, your system is never down. Please contact our sales team for more details.

The display of my borer machine started flashing. What should I do?

The Borer Machine requires annual service and calibration to maintain its accuracy and, by extension, the accuracy of your measurement results. One month before the due date, the Calibration Date will start to flash as a reminder. At this point, prepare to have the Borer Machine returned to DJH for its annual service and calibration.

How often is it recommended to calibrate my microscope?

This depends on the use it gets, but most of the time, we recommend performing a calibration verification once a week. Please refer to the operation manual for further instructions.

What is the “Linear x10” checkbox for?

By default, linear measurements are measured as flat surfaces. If you need it to follow the angle of a crater, check the “Linear x10” box. This will enable the x10 factor used when calculating a crater.


What happens if I perform an insufficient number of joints in a sheet?

Performing insufficient joints on each side of the sheets may result in strip separation whilst under tension.

How do I know how many joints will provide the strength to keep the material together?

The strength of each joint depends upon the gauge and properties of the metal being connected. As a general rule, 20 punches on each side of 0.4mm (0.15”) soft iron sheets provide a tensile force of approximately 25kN (5620lbf).


I have two sheets with different thicknesses. How should I place them?

If joining two sheets of different thicknesses, always place the thicker material on the underside.

Do I have to send my MEK Rub Test Machine to DJH for its annual calibration?

No. The calibration is a simple process and can be performed at your facility. Please refer to the operation manual for further instructions.

What is the optional variable stroke kit?

The variable stroke kit is an add-on kit that allows for the use of non-standard size panels ranging in length from 9cm (3.5”) to 30cm (12”).

What is the optional variable weight kit?

The variable weight is an add-on kit that adjusts the rub head weight between 1000g and 3000g in increments of 50g. This means that one machine can run test panels using the EU/ISO Standard and US/ASTM Standard weights of any custom standard weight.


What is the optional dual reservoir kit?

The dual reservoir is an add-on kit allowing the use of two solvents for the rub test procedure. The two solvents are loaded into the machine; there is no need to change or drain any, and both are ready to be used.

What are the compatible solvents with the machine?

The compatible solvents are MEK, Acetyl Acetone, Acetone, Acetylene, Isopropyl Alcohol and Methanol. Never use corrosive solutions.



Below, you will find a set of manuals and support documents to help you with each piece of equipment. If there is anything that you cannot find, please reach out to us on our contact page, and we will be happy to be of assistance.

MEK Rub Test Machine

MEK Brochure

Scrape and Intercoat Adhesion Test Machine

Scrape and Intercoat Brochure

Strip-LOK™ Joiner

Strip-LOK Brochure

Weld Inspection System

Weld Inspection System Brochure