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Tag Archives: automotive refinish

What a painter should learn from coronavirus pandemic?

Nowadays press, internet and television bombard us with threatening statistics about COVID-19, or coronavirus in plain English. Everyday a new country is added to the list of infected areas, numbers of sick people with a death toll statistics cause panic and fear. Dust masks and hand antiseptic disappeared. People from all over the world have been chasing for any protective masks to sell to China (50% of all masks worldwide are produced in China, by the way). Yet, I am not writing this article about the virus itself. There more than enough experts and non-experts speculating about this subject anyway.

Last week I visited one of our customers in Greece. During my visit, a painter walked in, asking for the dust masks P2. “How many are there in the box?” he asked. “Twenty?” “Give me five boxes. I have three kids at home”. The guy paid and left within a minute. My distributor laughed after the painter left. “His name is George (I changed the name, of course), and he has never used any respiratory protection neither for prep jobs nor for painting. At least he knows now that there are different masks, like P2 available.” “This virus will do well for these folks”, he added with a smile on his face.

It was somehow funny, but alarming at the same time. The painter took these masks obviously because of all the panic around coronavirus. But, why would he expose his health to toxic dust and solvent fumes? How happened that a very distant danger of the exposure to the not-so-deadly virus outweighs the everyday, very real work hazards? I have no reasonable answers to these questions.

We all have people we love and care about. Often a car sprayer is the only person to provide for his family. Not using personal protection in a bodyshop is not only stupid, but also unfair in relation to the close family, especially children. They need you healthy and well. Car paint sprayers have about 90 times higher risk of getting asthma than other working population. Therefore, the chances of dying from breathing related illness if infected by COVID-19 are negligible if compared to the health issues caused by unprotected work as painter. Personal protection products are affordable, widely available from the paint stores and there are no excuses to avoid using them every time you grab a sanding machine or a spray gun. Stay healthy and, please, protect yourself!

Variety of orbital sanding machines. Difference not to be ignored.

When we speak about different aspects of the car body repairs, usually we mainly discuss the quality of the materials, especially chemicals. No doubt, the final result of any refinishing job depends on paint, clear or primer used. However, it is of utmost importance not to forget how important is the preparation stage, including such a tedious task as sanding.

Just after the Christmas holidays, during the paint preparation workshop in the company’s training center, I came across an interesting question from our customer. This quite an experienced painter was testing different brands of abrasives together with our technical specialist. While I was discussing something with one of our sales manager, I overheard a heated discussion between the painter and our technician. The argument was about using P400 abrasive disc with 5mm orbit sander. “I only use 5mm orbit, and there is no need for any other model”, the painter said with confidence in his voice. “All these different orbit sizes are just made to make us buying more unnecessary tools”, he added. If you ever had an argument with a painter, you probably know that they are hard to convince about pretty much anything. “Show me the difference “, exclaimed the painter. Therefore, we decided to give it a try.

The rule of thumb

Probably you know the recommendations of tools manufacturers. For the abrasives with grits from P80 to P180 use a sander with larger orbit of 5-6mm, while for the finer sanding jobs with P240-P600 – orbit of 2.5-3mm. Some of the manufacturers also offer machines with rather big orbit of up to 10mm for demanding paint stripping operations; however this kind of sanding tools are not common. What is usually missed in those recommendations, it is the explanations behind this information.

In reality the theory behind is very simple. A large orbit allows the abrasive to cover bigger surface and to remove the “picks” of the uneven surface faster and more effectively. On contrary, smaller orbit covers smaller area, but more densely, leaving smoother surface.

From our internal tests, we found that 5mm orbital sander with the same abrasive and all other conditions the same, removes up to 20% more material than 2,5 mm orbit. This is very important especially in paint stripping or body filler sanding jobs. On the other hand, finer grits load up less when used with smaller orbits, like 2,5-3 mm. This allows achieving better quality surface at less time.

Take away

The choice of tools and materials is a painter’s undisputed prerogative, however we all should not ignore the common sense and facts. Doubt is good only when it pushes one to explore and search for facts. If facts are obvious, ignorance in this case is unacceptable. Using recommended sanders will save you time and money. Proved!

If you want to have a successful car repair garage, this is the most important trait you must have.

Last week I had a minor health issue, and I had to visit the on-duty hospital during the night. I will skip all the hassle and long waiting in the Greek state hospital. It is awful. It is worth writing about, but not in Etalon Refinish Blog. However, while waiting in an uncomfortable chair for my turn to see the doctor, I realized that there is a similarity between health care providers and automotive repair professionals. But how?

From my point of view, the feelings we experience when we get sick or have an accident with our car, are very similar by nature. These feelings are sadness, distress, anxiety, disappointment and extreme discomfort. In both cases, a person seeks for understanding, quick relief of the pain and, most importantly, for compassion. The very nature of the collision repair business is closely related to negative events and accidents. Nobody likes to have an accident, even if nobody is heart; the view of a crashed vehicle is very unpleasant itself. Right?

In the relation to the above-said, I can conclude that if a car repair business owner wants to be successful, he or she needs to show his understanding of the customer’s feelings. He must express compassion and willingness to guide the customer through this negative experience quickly and as hassle-free as possible. There are many ways to do this. For example, a bodyshop could offer a courtesy car, help to complete the paper works with the insurer, or simply spend a few minutes listening to what the customer has to say. Being compassionate will always pay back with the returning loyal customers and good referrals. Recently, I stumbled upon an ad, where the bodyshop owner was offering a 15% discount for those customers who had to pay the damage from their pocket. In fact, any small move, like the above, will count.

To summarize, I would like to stress one more time that understanding the customers’ feelings are of utmost importance for any business, especially for the people involved in customer service in difficult life situations. About six years ago, I wrote an article with the name “4 things a car painter and a doctor have in common”, but I could add now another thing – a good doctor and a car painter both must be compassionate…

 

UV or not UV?

Those of you, my dear readers, who have taken part in a trade fair as an exhibitor, know how exhausting it could be. However, trade fairs are still the best way to meet new people, catch up with colleagues and learn new things about your industry. Today, when the Collision Repair Expo in Melbourne closed its doors, I look back and think, apart from meeting new and old friends and colleagues on this fair, I definitely take with me the understanding of one future defining technology – UV curing coatings.

While UV technology is not something completely new to the collision repair industry, yet it is now, when all the major automotive paint producers actively market it. During the last three days in the Melbourne Exhibition Center I had an opportunity to get some deeper knowledge of the UV-curing products’ advantages over the conventional 2K coatings, and the challenges, which follow this trend.

Some of you may ask the question: ”Why do the major players in the automotive refinishing industry start marketing UV-cured products now?” Well, benefits of such materials have been known before – ultra fast drying, zero sinking (shrinkage), no heat curing (great for sensitive areas), one component materials (no hardeners required). Yet, what are the challenges? Is adopting UV technology an easy ride? There are a few obstacles though – high initial investment in equipment, products cost (UV materials are expensive) and resistance to change from the painters, when especially the benefits are questionable. Let me analyze what I mean.

Initial investment

One of the largest obstacles for any new technology is the cost and complexity of the associated equipment involved. On this direction I can clearly see some development for last couple of years. For example, I saw some new players entering UV-curing equipment, like the UV-curing brand Lihtan. Australian designed Lihtan brand attracted many visitors in Melbourne Collision Repair Expo this month. Milton Da Silva – cofounder of Lihtan – told me during our conversation in Melbourne that the interest for the UV technology is at its pick; this is why he works closely with all major paint brands to offer affordable and reliable UV light systems. Already many premium automotive coatings manufacturers approved Lihtan UV equipment (www.lihtanuv-a.com). It goes without saying that the more manufacturers of the related equipment appear, the better.

Cost of UV materials

This is probably one of the most important obstacles at the moment. With an aerosol UV primer retailed at more than 70 Euro per can, these products could hardly be described as affordable. What the suppliers of UV-cured materials need to do first – is to explain really well and in details how an ordinary bodyshop will benefit while paying such a high price. One could really claim, for example, that difference in drying time is not that big to justify the premium paid. If, on average, with IR lamp a spot primer would dry in 6-7 minutes, a UV primer would require about 2-3 minutes. Is the 4-5 minutes difference serious enough argument? The question should be answered by each sales rep selling UV stuff. On the other hand, if the UV technology really takes off, manufacturers will achieve economies of scale, and the prices may go down. Time will tell.

Resistance to change

By nature, a human being is reluctant to leave his comfort zone. This applies to all aspects of our life, including our work life. Therefore UV technology will have to go through painters’ and shop owners’ hyper-criticism, skepticism and doubt. However, there is nothing new here. Waterborne paints were met with a lot of criticism too, and now more and more collision repair shops switch to “water”.

I am sure that UV-curing materials will find their place in modern bodyshops only if the paint producers will explain and communicate legitimate, not just on PowerPoint slides, benefits for both painters and business owners. Those benefits must outbalance the expenses and costs of the materials for most of the bodyshops out there, and not only for the very top ones. Only if an average smash repair store profits by the novelty, we would be able to say with assurance that UV-cured technology found its place in the sun…

 

 

Color matching problems not related to the paint itself

Probably color-matching problems are among the most frequent paint defects in the car refinishing industry. It is also the main cause of expensive re-works and unhappy customers. In many cases, the poor color-matching is due to the darker or lighter appearance of the final result. Below I bring to your attention 6 parameters a painter should consider before the basecoat application:

Spray gun pressure

Unfortunately, many painters underestimate the importance of precise measurement of the spray gun inlet pressure. They either do not use a manometer at all, or rely on a poor quality analog manometer.

Outcome: Lower than designated pressure causes darker color result, while higher pressure – lighter color than needed.

Solution: Use a reliable manometer, preferably digital one, for each basecoat application job.

Humidity

Most of the paint manufacturers state the ideal humidity level for the perfect applications conditions. However, we do not have the possibility to control humidity levels easily. For your reference, ideal humidity level is between 30% and 50%, lower than 30% humidity is considered low, while higher than 50% humidity is considered high.

Outcome: Low humidity causes darker result, while high humidity – lighter result

Solution: Adjust viscosity based on the instructions from paint manufacturer, consider changing nozzle size and air cap with lower or higher air flow (consider switching between higher air volume HVLP technology gun and lower volume Devilbiss Trans-Tech or High Efficiency or SATA RP).

Temperature

Just like with humidity, every manufacturer advises the optimal temperature levels for the application. Unlike humidity, it is easier to adjust temperature levels in a workshop, but still there are limitations as well. As a rule of thumb, low temperatures can be considered the range from 15 to 20° C, normal – 20-25° C and high – 28-35° C

Outcome: Lower temperatures will cause darker results, while higher temperatures – lighter results.

Solution: Adjust viscosity based on the instructions from paint manufacturer, consider changing nozzle size and air cap with lower or higher air flow (consider switching between higher air volume HVLP technology gun and lower volume Devilbiss Trans-Tech or High Efficiency or SATA RP).

Thinning (dilution)

Every single automotive coating product comes with a detailed technical data sheet. Unfortunately, often painters either ignore those data sheets or simply continue to work with any new product the “good old way”. In reality, under thinning or over thinning will inevitably cause color problems.

Outcome: Under thinning will cause darker color shade, while over thinning will produce lighter than needed variation.

Solution: Follow the manufacturers’ technical instructions, labels and manuals. Use mixing cups with measurement marking, scales and mixing rulers.

Spray gun distance from the surface

Every sprayer has its own style and spraying technique, however certain standards must be respected. One of the parameters I refer to is a distance between the spay gun and the vehicle’s surface. Consider that normal distance lies within 15 to 25cm range.

Outcome: Too small distance will cause darker colors, too high distance – lighter variation.

Solution: Respect the advised distance between the gun and the surface.

Speed of spraying

Similarly, speed of paint application is very individual and varies from sprayer to sprayer. However, extremes are not good.

Outcome: Spraying with too low speed will cause darker colors, while spraying at excessive speed – lighter color than expected.

Solution: Follow the paint and spray gun manufacturers’ instructions.

 

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