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Soft Expanding Foam

Original price was: 42,50 €.Current price is: 38,50 €.

Quick overview

This soft and flexible foam is made by mixing two components that expand about 10-12 times their original volume! This foam is excellent for making soft props that are safe to use and won’t break. For example a brick that you can throw. It is often used in theater, movies, industrial world, arts, crafts and so much more! Watch the video on the left side or scroll down on this page for detailed instructions.

  • Content: 1kg + 0.5kg
  • Expansion : 10-12x original volume
  • Mix ratio : about 1:0.5 (part A:part B), has a high tolerance
  • Pot time : 30 seconds
  • Demolding time : 30 minutes
  • Full technical data: click here

Full product information


Mix ratio

1:0.5 (part A: part B)

Pot time

30 seconds


Demolding time

30 minutes

Cure time

1 hour

Best curing temperature

Room temperature



10-12x original volume

Shelf Life

18 months

Mix parts A and B together in a container. Be sure to take the mix ratio into account, part B should only be about half as much as part A (mix ratio = 1:0.5). There is a high tolerance on this ratio, so it doesn't have to be perfect. Speed is more important.

Stir well for about 30 seconds.

Pour the mixture in your desired mold, shape or container.

After 30 minutes you can already take the foam out of your mold if you desire to do so. But be very carefull, it takes another 30 minutes for the foam to be completely cured! Sometimes it might be smarter to leave it in the mold until all the time has passed.

The resins and silicone from cosplayshop.be are safe for using at home provided proper and adequate personal protective equipment and good ventilation is used. This applies to any resin that is not bought at our store as well.

GHS Health hazards (if used improperly)


Causes skin irritation.


May cause an allergic skin reaction.


Causes serious eye irritation.


May cause allergy or asthma symptoms or breathing difficulties if inhaled.

GHS prevention precautionary statement


Obtain special instructions before use.


Do not breathe dust/fume/gas/mist/vapours/spray.


Use personal protective equipment as required.

GHS response precautionary statement


If exposed or concerned: get medical advice/attention.


If skin irritation or rash occurs: get medical advice/attention.

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