Pursuing the perfect finish with 3M
Each time a vehicle rolls out of the shop, it’s a chance to showcase your dedication to auto finishing. You’ve worked to ensure the vehicle has been sanded, compounded and polished back to the way it was when it came in. But to your customer, it’s now somehow even better, more exciting – like it was when it was brand new. This is among most powerful endorsements you can deliver for your collision repair operation, and it represents the full potential of your paint finishing and detailing shop. To help you achieve a finish free of defects and swirls, 3M provides these standard operating procedures (SOPs) and technical tips. You’ll also find the well-known brands behind them, such as Trizact™ and Perfect-It™, to help your pursuit of the perfect finish in auto repair.
Here you will find simple yet detailed 3M standard operating procedures for some of the most important jobs in collision repair. Included are small area (denibbing) and full panel paint finishing, as well as procedures for finishing without compounding and final vehicle clean-up. 3M SOPs for paint finishing and detailing, including headlight restoration.
Any auto detailing and finishing job can present challenges – problems like haze, fading, nibs, swirls and paint runs can make even the simplest processes and procedures much more time-consuming and costly. The answer: technical know-how. 3M tech tips for paint finishing and detailing can help ensure not just a consistently excellent finish, but also one that’s repeatable and efficient.
Here, in short, convenient step-by-step formats, are invaluable methods for “full cut and buff,” or removing paint imperfections on full panels where the finish must also be matched to OEM textures. These SOPs cover the basic steps for finishing full panels, starting with defect removal and texture matching and proceeding through scratch refinement, compounding, polishing, final detailing and inspection. Included are ways to reduce your paint finishing time and the optimal tool speeds for compounding and polishing, as well as 3M products developed specifically to help you make your automotive finishing results really shine.
Here are 3M SOPs for removing minor paint defects on individual panels where OEM texture matching is not needed. Procedures include initial defect removal as well as scratch refinement, compounding and polishing with minimal swirl marks, and final inspection.
Review the SOPs for removing minor imperfections in painted vehicle surfaces. These procedures for efficiently removing small dust nibs, runs, sags and other defects feature the 3M™ Paint Defect Removal Hand System of flexible abrasives, foam and rubber pads and sanding blocks.
These 3M standard operating procedures detail the methods for full panel finishing without the compounding and initial polishing steps. They feature 3M™ Perfect-It™ 1 Finishing Material, designed to cut like a compound but handle like a polish to remove 3M™ Trizact™ 3000 and finer scratches.
These 3M SOPs detail finishing small panel areas without the compounding, initial polishing and often the ultrafine polishing steps. They feature 3M™ Perfect-It™ 1 Finishing Material, designed to cut like a compound but handle like a polish to remove 3M™ Trizact™ 3000 and finer scratches.
A small repair that can make a big difference – here are the procedures and products for restoring the high-lumen clarity auto headlight and other plastic lenses instead of replacing them. These SOPs show the steps for cleaning, masking and sanding with 3M™ Trizact™ abrasives and restoring the protective clear coat to eliminate haze and yellowing on auto lenses.
To make the most of your paint finishing repairs, it’s a standing best practice to thoroughly clean the vehicle as a final step before delivery. These 3M SOPs show effective and time-efficient ways to clean, dress and detail carpeting, engine compartments, tires, auto glass and more.
At 3M, our technical staff shares your goals in paint finishing and detailing. Here are some tips for creating the ideal automotive finish every time, and for improving overall efficiency in the paint finishing and detail shop.
Customer Challenge: Our shop is experiencing too many instances of dieback, where the finish appears hazy after compounding and polishing. What can we do?
Technical Tip: Dieback following compounding and polishing is usually the result of sand scratches or swirls not being completely removed during each critical step. For example, if your scratch refinement process leaves 1500, 3000 or even 5000 grade sand scratches on the surface before compounding, the compound can fill in the scratches and cause hazing.
To prevent this, it is a best practice to apply an inspection spray after each scratch refinement step as well as between the compounding and polishing steps. This will help highlight the remaining scratches and swirl marks that you otherwise may not notice. Also, be sure that you have adequate light – as close to actual daylight as possible – for the most accurate inspection of the compounded finish. A light source that replicates natural sunlight such as 3M™ Sun Gun™ II is a good option. Be sure to carefully inspect after each step, including compounding, polishing and ultrafine polishing. If you find remaining scratches or swirls, continue compounding or polishing until they have been completely removed.
Customer Challenge: In our busy paint finishing shop we find that compounding and polishing are perfectly effective for swirl removal. What is the purpose of using ultrafine machine polish?
Technical Tip: Though compounds remove sand scratches left over from the scratch refinement steps and polish is formulated to remove swirls after compounding, both compounds and polishes will typically leave swirls in the vehicle surface. The ultrafine machine polish is vital for removing hologram swirls left from the polishing step, resulting in the perfect finish.
To avoid potential dieback, you should always use dedicated premium pads and microfiber detail cloths at each step. Compounding and polishing pads are usually designed specifically for each job, and often colored accordingly to make the process fast and efficient.