Quick answer: Samurai 2K aerosol cans use a two-component system. To activate a compatible can, follow the activation instructions printed on its label: prepare the can, engage the built-in activator as directed, and shake thoroughly to mix the coating and hardener. Once activated, the usable working time is limited—typically around five hours for Samurai 2K products—so plan your job before activation.
What does activating a 2K aerosol mean?
A 2K (two-component) aerosol keeps the coating and hardener separate until activation. Activating the can releases the hardener so the components can combine inside the aerosol. Unlike ordinary 1K aerosols, an activated 2K coating begins a chemical curing process.
Before you activate your Samurai 2K aerosol
- Check that your exact Samurai product is a 2K aerosol and read its label and safety data sheet. Not every Samurai aerosol uses the same activation method.
- Prepare and clean the surface, mask surrounding areas and arrange a suitable, well-ventilated spraying area with appropriate extraction and PPE.
- Confirm that the temperature, surface preparation, primer compatibility, flash-off times and spray technique meet the product instructions.
- Make sure you can complete the job within the stated pot life. Do not activate the can just to test its colour.
How to activate a Samurai 2K aerosol can: step by step
- Identify the activation mechanism. Locate the activation instructions and the designated activator on your specific can. Do not pierce, cut, dismantle or improvise an activation method.
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Mix before activation. Shake the can until the agitator balls start to rattle for 2-3 minutes.
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Activate exactly as shown on the can. On a flat ground with the red cap facing downwards, hold fist and slam the top of the can. The can is activated once the red cap is able to be pushed down and retracts easily.
- Shake thoroughly after activation (for another 2-3 minutes).
- Check spray performance safely. Use a suitable test panel in an approved spray area before coating the intended part.
- Apply within the product's working time. Use the can according to the specified coats and flash-off times. Do not store activated material for a future project. SAMURAI 2K products have a pot-life of 5 hours once activated.
What happens after activation?
The resin and hardener react to form the cured coating. The quoted working time is not the same as drying or full-cure time. Do not assume an activated can remains usable the next day, even if it still contains paint.
Safety when using 2K aerosol paint
Many 2K polyurethane coatings contain hazardous hardeners, potentially including isocyanates. Spraying these materials can require specialised controls, including suitable extraction and air-fed respiratory protective equipment. In the UK, refer to the relevant HSE guidance and the product safety data sheet. Ordinary disposable masks are not a substitute for the specified respiratory protection. Keep aerosols away from heat, ignition sources and children. Never puncture or incinerate a can.
Frequently asked questions
Do all Samurai aerosol cans need activating?
No. Check the product label: activation applies to the designated two-component (2K) products, not every aerosol in the range.
How long does Samurai 2K aerosol last after activation?
Samurai 2K products are generally described as having an approximately five-hour pot life, but the exact working time and conditions must be confirmed on the relevant product label or technical data sheet.
Can I use an activated Samurai 2K can the next day?
Do not plan to. Once the two components have mixed, curing progresses inside the can. Follow the specified pot life and disposal instructions.
Should I shake the can before or after activation?
Follow the sequence on your product label. Thorough mixing after activation is essential; some products also require shaking beforehand.
Is the activator the same on every Samurai 2K product?
Do not assume so. Use the instructions for the exact product and packaging version in your hands.
Can I spray Samurai 2K paint indoors?
Only in a suitably controlled spraying environment with the extraction, respiratory protection and other controls required by the product safety information and applicable workplace requirements.
Final checklist
Confirm your product's activation method, required PPE, surface preparation and pot life before mixing. For product-specific instructions, consult the label, technical data sheet or Samurai Paint support.
