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eBay£16.42Visit shop U-Pol Top Stop Car Body Filler Smooth Quick Stopper Finishing Repair 750ml Upol
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The U-Pol Top Stop 750ml finishing stopper is designed for professional automotive body technicians and serious DIY enthusiasts who require a flawless surface before applying paint. Its primary benefit is its ultra-smooth, pinhole-free finish that saves hours of labor during the sanding and priming process; however, users should be aware that it has a relatively fast curing time, necessitating efficient application before it hardens.
| Model Part Number | UPTOP/M |
|---|---|
| Brand | U-Pol |
Yes, but for optimal long-term results, ensure the metal is scuffed and free of any rust or contaminants.
No, this is a finishing stopper designed for surface imperfections, not for filling deep dents or structural repairs.
After applying, start with 180-grit to level, then follow up with 320-grit for a smooth finish prior to painting.
Typically, it is ready to sand in 20-30 minutes, depending on the ambient temperature.
Yes, as long as the paint is sound, fully cured, and thoroughly scuffed to provide a mechanical key for adhesion.
Insufficient hardener was added; ensure you use a consistent ratio and thoroughly mix the components until a uniform color is achieved.
Ensure the surface was wiped clean with degreaser before application and apply more pressure during the initial swipe to force the stopper into minor surface imperfections.
The product has not fully cured; allow for more time before sanding or ensure your environment is not too cold.
To use U-Pol Top Stop, ensure the substrate is cleaned with a degreaser and sanded to remove rust or oxidation. Mix the filler with the provided hardener on a non-porous mixing board using a plastic spreader; a standard ratio is roughly 2% hardener by weight. Apply the mixture firmly to ensure good adhesion, keeping layers thin to prevent cracking. Once cured, sand within 20-30 minutes. Store the container in a cool, dry place away from direct sunlight, and always ensure the lid is tightly sealed to prevent the solvent from evaporating and hardening the contents prematurely.
