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Aluminum, Surface Area & Why Glue Pull Repair Works

Auto makers have experimented with various manufacturing materials over the years. Steel, iron, composites, plastic, aluminum, and even wood have been the materials of choice. In the early 1940s, Henry Ford even produced a car body made completely of soy; other manufacturers have been using plastics and composites for some time not only for door panels but bumpers and fenders as well. Remember the salespeople at Saturn dealerships demonstrating the toughness of their cars’ plastic body panels by jamming a shopping cart into a door or kicking the panel, resulting in no damage?

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Today aluminum is getting most of the press, for a number of reasons. Car makers use it in doors, hoods, trunks – even in complete vehicle structures. According to the Aluminum Association, aluminum has the strength of steel but has only 50% of the weight. Obviously, this indicates big savings in energy efficiency, which for vehicles means more miles per gallon of gas or diesel. As an added benefit, people recycle 90% of the aluminum in a vehicle at the end of its life.

Stud Welding

Technicians use stud welding for panel repair in most body shops. This means welding aluminum studs into the panel, attaching a pull tool to the studs, and pulling the dent out from the front. Stud welding does not always involve removing the panel, but it still requires substantial pounding, filling, sculpting, and finishing work.

Anyone who has ever stud welded to repair a dent can tell you it can present problems. Aluminum studs often pop off during the pull, which means you may have to re-weld or try to make the pull with the remaining studs, perhaps inviting more damage if that doesn’t work. In addition, when removing the studs after the pull, you can easily tear holes in the metal, creating even more repair time. When you are finally done with your pull, you have to remove the studs, skim coat, and finish the area.

The reason studs sometimes pull out is because they cover too little surface area on the panel. The surface area is not large enough to sustain the force of the pull. As a result, when you pull, you often rip holes in the panel as the studs pull out because there is too little strength in the metal for the pull. How, then, do you increase the surface area to pull without creating holes and welding more studs?

GPR Advantages

With glue pull repair (GPR), you attach a plastic piece, called a tab, to the damaged area. The tab covers much more surface area than a stud so you have more area of the dent to pull with. This allows you to apply more pulling power without fear of additional damage to the panel in the form of holes. In addition, because you do no stud welding, you do not violate the surface of the panel or anything on the backside.

GPR provides an efficient, clean way to pull the dent. With its tab-and-adhesive method of pulling, after the adhesive is set, you attach your pull tool to the tab and pull the dent out. Once you’ve pulled the dent, you simply remove the adhesive with a spray of isopropyl alcohol, do some minor knock down work, skim coat and finishing, and you’re through. No studs breaking off and no additional holes to fill as a result.

Use Your Own Tools

Glue pulling is a straight swap for stud welding or wiggle wire setups where you utilize the pulling techniques and tools that they already have. Our adaptors, tabs, and glue are extremely cost effective compared to purchasing aluminum-specific tools and components. We offer adapters so that you can continue to use the bridges and fulcrum bars you already have in your tool box. You can enter the aluminum body repair business tomorrow and be on your way to increased revenue and improved shop efficiency with GPR.

KECO, the Premier GPR Specialists

GPR began in the early 2000s. But the adhesives and tabs back then were weak so they broke often, and tool systems were not readily available. As a result, select technicians only used the “magic” of GPR on lighter pulls and to accent body shop work on large pulls. Since those early years, KECO has been at the forefront of improving these techniques and tools and has taken them to a level that allows body shops to adopt them with ease.

You can shop the entire assortment of KECO Body Repair Products as well as many of the other premier brands in dent repair at To see products in-use with the power of GPRKECO’s YouTube channel is updated all the time with new videos.

Article By KECO Tools


What Is Glue Pull Repair?

Modern glue pull repair (GPR) first appeared around 1999 when technicians working at a German company called Würth introduced some of the first commercially viable glue-pulling tools. Prior to this, backyard mechanics experimented with glue pulling, but the tools and techniques they developed were not available to the public.

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Würth began releasing its tools in the United States in the early 2000s. Early GPR technology was a poor match for today’s advanced techniques—adhesives and tabs were weak so they often broke while tool systems were not readily available. GPR itself was not well known; the processes and procedural techniques that allowed techs to achieve really strong adhesion to pull large damaged areas were not available. Some specialty paintless dent repair (PDR) techs used what was considered the “magic” of GPR on lighter pulls and to accent body shop work on large pulls. But in general, technicians did not have what they needed—the know-how, the adhesives and pull tools—to get serious about using GPR in the body shop.

Glue Pull Repair versus Paintless Dent Repair

Except for contracting out certain jobs for which PDR is preferred, collision repair shop technicians don’t have a burning need to learn or use PDR. But body shop techs can use GPR to achieve improved results. Initially, techs developed GPR as an aspect of PDR, but today’s GPR is much improved and, as a result, positively enhances collision shop work.

GPR is similar to PDR in that one of the main objectives is to have as much of the original finish remain so at the end, there’s little or no filling, priming, and painting to do. Like PDR, there’s no stud welding when you use GPR. After cleaning the surface to prep it, you pull the dent out from the front using a pulling tool or device and an adhered “tab” that you attach to the panel with high-strength removable adhesive. After you’re done with the pull you may have to knock down some high spots in the same manner as you work today. But aside from some minor filling, priming and painting, in most cases, you’re done.

Another benefit of GPR (in addition to leaving most of the paint and original surface coating) is that you avoid disturbing or damaging insulation and electronics that may be on the reverse side of the panel. Learning GPR requires not only prepping the surface by cleaning it but, equally as important, making sure the temperature is right—the temperature of both the panel and the glue. Techs must also choose the correct tabs to use, and the best pulling tool for the job at hand. Fortunately, these skills and choices are easy to learn and employ.

Glue Pull Repair versus Stud Welding

Conventional methods utilize studs or wiggle wire and give you something to which you attach your pull tool. Studs or wires are welded on and often pull or rip holes into aluminum, leaving additional work for technicians to clean up. This method works adequately, but GPR eliminates stud welding, so the repair is far less intrusive with less post-pull work pounding, filling, priming and painting. There’s no need to spray wax or coatings inside the panel because you didn’t burn any of the OEM material away.

KECO Brings GPR Into Body Shops

PDR techs and tool providers pioneered GPR techniques in the late ’90s. Since those early years, KECO has been at the forefront of improving these techniques and has now taken them to a level that allows any shop to adopt them with ease. Through proven methods of GPR, techs pull dents using the same tools for steel or aluminum with no welding and no need for separate steel and aluminum work areas. The overall result is a less intrusive way to repair dents.

KECO’s GPR also addresses the fact that body panels are no longer simple pieces of metal that serve as side and quarter panels; today, they contain wiring, electronics and insulation on the back, sensors and e-coatings on the front. Glue pull techniques and tools allow technicians to use their skills in new ways that avoid unnecessary damage making repairs faster and more efficient.

You can shop the entire assortment of KECO Body Repair Products, as well as many of the other premier brands in dent repair at To, see some products in-use with the power of GPRKECO’s YouTube channel is updated all the time with new videos.


KECO also provides advanced training in GPR techniques and approaches taught by their own highly knowledgeable and experienced personnel. KECO offers free online instruction, regional training for smaller shops and on-location classes for larger shops. Click here to sign up.

Contact KECO today so your shop has the tools and knowledge to enhance your profitability, improve efficiencies and provide your customers with a higher quality repair.

Article By KECO Tabs

KECO Training

The Importance Of Auto Body Repair Training

Is training important? If you think it is, how can it benefit your business? Researchers like Shelley Frost, who has written a comprehensive series of articles about training, discovered that companies have found training to be beneficial in many ways. Training expands an employee’s knowledge base, it strengthens skills a person may already have, it makes employees aware of safety issues s/he may not know about. Training also increases employees’ confidence in their skills and their ability to perform a task correctly the first time, reducing the chance they may have to rely on help from their supervisors or other workers. Training and education for technicians and skilled employees often helps them home in on career objectives by providing them with a solid foundation in launching and then remaining on their chosen career path.

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Benefits for Owners and Managers

Managers and owners see benefits when they train their employees. With training, a skilled person performs better and more effectively, which translates into a more efficient workplace which further translates into higher profits. Trained individuals are also more likely to remain on the job, which means less employee turnover in the shop so managers and owners aren’t continually on the lookout for replacement workers.

The wrong type of training and inappropriate frequency of training can be negative. Obviously, owners and managers want to provide the specific training their employees need; one size does not fit all, except perhaps in safety or general-practice training. Common sense indicates it’s best to provide classes and education that pertain directly to an employee’s job and career path.

If owners and managers provide too many classes in too short a time, it can be difficult for their employees to absorb the new and important information the class provides. Overtraining can also increase stress on employees with the result that performance and production quality decrease. Another potential hazard is too much theory and not enough hands-on. Brain knowledge is certainly helpful, but without the “grounding” effect of some hands-on, practical application of that knowledge, training can be a waste of time, money and effort.

Body Shop Training

Training in body shop methods can be a big help. In the classroom, technicians learn from the experts while improving the mental, thinking approach to everyday as well as unusual repairs. The techs then take these ideas back to the shop and try them out for themselves. Retaining the notes they took and the literature that was part of the classroom instruction, technicians can refer back to them when they get stuck or need a refresher.

Combining hands-on experience with classroom education give employees the best of both worlds.

With hands-on training, techs not only learn from the experts by watching them do their magic, but they get to try out techniques and approaches themselves with the mentoring guidance of professionals and those with years of know-how to share.

Training often gives technicians exposure to new methods and techniques and allows opportunities to review familiar ones.  It allows technicians to experience for ourselves the “nuts and bolts” of the fascinating, ever-changing world of body-shop repair. But training also gives techs an opportunity to meet and hang out with other technicians, people of “like mind” with whom they can share their daily trials and concerns, and who knows, maybe even make some new friends along the way. Training sessions also allow technicians to have contact with those who have been in the field perhaps years longer than they have so they can absorb some of their wisdom and in effect become like them as body-shop experts and teachers.

The problem is most body-repair classes have been developed by insurers. They teach technicians how to do more work below cost, but this does not provide many technicians directions to where they want to go. Sure, that type of training helps insurers but what about essential new techniques, methods, and approaches? Technicians need to know and apply these in order to not only keep up with the latest but to be at the forefront of the newest techniques and methods with regards to the ever-evolving field of automotive manufacturing. Using them daily in the shop saves techs time and energy, and saves the shop time, energy, and money while helping increase profits. Body shop training that provides all of this is a big challenge. KECO GPR (glue pull repair) classes and hands-on training have developed expert-led, certified classes and hands-on training to meet this challenge.

KECO Training

GPR is a transformative approach to auto and truck body repair, leaving behind the traditional methods of drilling and welding that are invasive and time-consuming. GPR unique tabs-and-glue method, in addition to requiring less time and effort to pull the dent, also leaves most of the paint and exterior coating on the panel, which means far less sculpting, priming, and painting. GPR successfully addresses the aluminum versus steel dilemma that shops face today and also the problems that electronics, sensors, and insulation on and behind panels can create. It is a method that guarantees that technicians will spend less time on repairs, expend less effort, and achieve fantastic results. You can almost see higher profits rolling in the door.

KECO offers three types of training in GPR methods and techniques.

  • Online at
  • Regional events at a host site
  • On-location training in the familiar environs of the technician’s or owner’s shop

Online Training

Online training is free and a great resource to learn GPR quickly and to become familiar with the tools involved in making repairs with the glue-pull method. Our online training may serve as the primary training, or techs can use it for continuing troubleshooting and tweaking after an initial classroom/hands-on session. The current online videos feature KECO’s own Jonathan Vandenfontyne who walks viewers through the “Six C’s of Glue Repair,” which is a comprehensive overview of GPR that lays out the basics any technician needs to know. This includes ascertaining the repair the vehicle needs, the type of tab and glue required to fix the dent, pulling tools, and other essentials of GPR. Click to begin learning about GPR now. 

Regional Training

Regional events are geared toward individual techs or for small shops that want in-depth GPR training but don't have enough guys on staff to justify the cost of on-location training. KECO hosts these events whenever there is enough interest generated in any one area. For example, KECO sponsored a regional training in Oklahoma City in early 2019 and one in Spring of 2019 in Pittsburgh. Regional training classes are open to anyone. Local techs typically fill up the class but trainees are more than welcome to fly or drive to the event. These classes typically cost $800 per tech and group rates are available for two or more technicians who attend from the same shop.

On-Location Training

On-location training is for medium to large shops that would like to train three+ technicians. This is dedicated, hands-on training in the comfort of the tech’s own shop. KECO instructors and students often do real repairs on customer vehicles so downtime is minimized and techs can see first-hand how they can utilize GPR approaches, tools, and methods in the shop. This is a more cost-effective option for shop owners compared to sending three or more techs to a regional event.

Certifications and training provide a number of advantages to help technicians, shop managers, and owners save time and effort in the shop, gain new customers, and increase profits while gaining a competitive edge on their competition. These include:

  • ensuring shops are running at optimal efficiencies
  • helping techs over any learning curves while implementing new tools into the shop
  • increasing the likelihood of success as new tools and techniques become standard in the body shop.

So take your body-shop skills to the next level with our classes. They provide knowledge and know-how taught by master technicians with decades of experience. With our regional and on-site training, technicians acquire in-depth explanations combined with classroom learning and hands-on practice so they can master processes and approaches. KECO students learn about how to utilize GRP tools in the most impactful ways and methods to improve results so shops can deliver unrivaled service to customers and increase profitability, too.

To sign up for training, click here now. KECO welcomes all inquiries.

Article By KECO Tabs

The Process For Maximizing Your Paintless Dent Removal Results is Glue Pulling and the future of Paintless Dent Removal.

Let's Talk GPR Glue Pulling Repair and Glue Pulling Dents. 2019 Has Become The Year of The GPR Industry.