Frequently Asked Questions

Please read our FAQ before sending us a message.

Electrical Safety

Can you get shock from the machine?

As with many other electric machines you can get a very small shock if you are not careful – but it’s not dangerous.


How hard should I press when etching?

It’s not necessary to press hard. Use a firm touch so that the current can pass through the fluid over the entire surface area of the marking electrode.


What is in the fumes/ smoke?

The fumes contain mainly steam – approx. 80% steam and 20% smoke. The smoke has been documented milder than welding fumes.


What are the requirements for waste water disposal?

The heavy metal content is minimal and certainly a lot less than if you use pickling paste or abrasives. As for the phosphoric liquids we are talking about such small quantities as most will evaporate in fumes and the rest is normally neutralised with the neutraliser that this is not an issue.

Where and how should I store the liquids?

In a cool dry place / not in the sun.

How soon do I need to remove the acid/ apply the neutralizer?

You can leave the acid till the end of day if you have to. It will not damage the surface. But it is good to bear in mind that the acid is harder to remove if it dries on the surface.

Where can I get MSDS for the fluids?

Your local Cougartron partner will supply the MSDS with the system.

Do you use the same fluid for cleaning & polishing?

CGT-550 is specially developed for cleaning and polishing. CGT-350 is for cleaning only.

But it is acid – will it burn the skin/ damage my clothes?

It is very pure, food grade acid and will not burn your skin or damage your clothes as it is a very mild solution.

Weld Cleaning & Passivation

How do I know that the surface is clean and passivated?

It is a manual process and a visible decision. It is important to understand that the machine does not easily remove slag or oxides but the passivation will still be complete. Even Pickling paste does not remove the oxides easily. It is also possible to clean MIG and stick welds with abrasives or Scotch Brite first, to remove the oxides, and then complete the cleaning with the weld-cleaning machine to achieve a strong surface passivation.

How often do I need to dip the brush?

When you start to see excessive arcing at the tip of the brush, it’s time to dip again. When there is not enough fluid in the brush, weld-cleaning performance will be reduced, and the brush will start to burn away.

How can I see when the weld is clean? (often it’s difficult to see when the weld is covered with dirty fluid)

Dip the brush again, and wipe it quickly along the weld. This clears the fluid away enough to see if the weld is clean.

Didn’t find your answer?

If your question isn’t answered here then please head over to our support page and raise a ticket so one of our very helpful team can assist you.

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