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3M Dynamic Mixing System - the system for efficient filler application
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Fed up of problematic body filler pinholes?
Due to the sealed environment of the Dynamic Mixing Nozzle, no air infiltrates the mixing of filler and hardener giving a high-quality finish.
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Concerned about wasted filler?
By taking the applicator to the job and mixing "filler-on-demand", you don't lose what you don't use - and additionally, you save working time as you can re-apply filler-on-demand from the cartridge.
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Tired of the messy filler process?
There's no scooping, mixing or cleaning up and a faster smoother finish means a final coat of filler or glaze could be eliminated. 3M's enclosed system ensures that your hands stay clean as well as your work area - giving an overall cleaner result!
- Always select appropriate Personal Protective Equipment - Eyewear, gloves, hearing and respiratory protection for your job and workplace!
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Step 1 - Cleaning of the surface
Degrease the surface of and around the repair area - follow the recommendations of your paint manufacturer. Well suited for this step are 3M Panel Wipes 34567.
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Step 2 - Sanding of the repair area down to bare metal
Recommended grids: P80 - P120 (or 150+ Cubitron II)
Tip: to prevent cross-contamination, always keep abrasives used on steel separate from those used on aluminium!
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Step 3 - Choose the right DMS filler of your choice
51002 - General Purpose Filler
51003 - Heavy General Purpose Filler for deeper dents and a slightly longer open time
51004 - Fine General Purpose Filler, smoothest to apply and sand, fastest to cure
51005 - Fine General Purpose Filler - Long. Smooth to apply and sand with a longer open time for larger areas / higher temperatures.
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Step 3a - Prepare the DMS cartridge
- Remove the cap and attach a nozzle paying attention to match the right size of the openings
- Assure the nozzle locks into place secured by the hooks.
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Step 3b - Attach the DMS cartridge to the applicator
- Retreat the plunger fully into the applicator.
- Assure that the spindle and the hexagonal nut are aligned.
- Turn the cartridge into place until it is firmly locked.
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Step 3c - Adjust the speed
Recommended for all 3M fillers: use 2.5 - 3 turns from a previously set zero / closed position.
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Step 4 - Filler application - either... directly onto the object or... onto a spreader
Advantages of DMS:
Application tips:
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- Dispensing of exactly the right amount needed
- Optimally mixed filler
- Application directly onto the repair area possible
- No air introduction by filler mixing
- Process safety
- Always fully pull the trigger
- Keep the nozzle immersed in material when applying the filler
- Ideally dispense 1 cm of material to flush a new nozzle of any air prior to material application to the panel.
- Open time for the nozzle - ca. 2-3 minutes
- Apply filler with continuous pressure to form a single globule instead of forming separate beads, this will minimise the risk of trapped air.
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Step 5 - Curing of the filler
Usually 10 - 15 Mins at 21° - 24° C - can vary depending on filler used, temperature and size of the repair.
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Step 6 - Control
Apply 3M Dry Guide Coat to show the filler structure and allow a controlled fast sanding. Dry Guide Coat also helps to reduce clogging and extends the live of the abrasive.
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Step 7 - Filler sanding
- Use 3M Abrasives 150+ Cubitron™ II by machine or with the right Handblock and dust extraction for a fast shaping of the filler area.
- Re-apply 3M Dry Guide Coat to highlight any deeper scratches and surface imperfections to be removed with finer abrasives.
- In order to prepare the surface for the primer application, reduce any scratches of 150+ by using grade 220+. To achieve optimal flattened results, use abrasive with a hand block.
- The very last step before primer application then needs to be done with a DA machine and Cubitron™ II 220+.
- To improve the adhesion of the primer, it is recommended to key the surrounding edge area with P400/P500.
