Polyester casting resin

Polyester casting resin 1kg
Polyester casting resin 5kg
Polyester casting resin 250gr
Polyester casting resin 1kg
Polyester casting resin 5kg
Polyester casting resin 250gr
  • Easy to process
  • Very transparant resin
  • Casting flowers, figurines etc.

RESION Polyester casting resin is a transparent casting resin with high UV resistance and low shrinkage. This casting resin is suitable for casting objects and for decorative castings and organic products such as flowers or insects, among others. You can colour the transparent polyester casting resin with various polyester pigments.


  • Easy to use.
  • UV resistant.
  • Crystal clear.
  • Low shrinkage.
  • Widely applicable.

How to use polyester casting resin

Polyester casting resin is easy to apply. To influence the processing time, you can vary with a hardener between 1% and 3%. Dilute the quantity of hardener depending on temperature and quantity of resin. As a guideline, we use 2%. This gives this polyester casting resin a processing time of about 20 minutes. 

TIP: make a quantity you can process within 10 minutes.

Polyester hardener

When buying the casting resin, you need to order along a hardener for polyester casting resin (MEKP). The table below indicates the quantity of hardener to order.

Polyester casting resin (PR11) Polyester hardener
1 kg 20 grams of hardener
5 kg 100 grams of hardener
20 kg 400 grams of hardener
230 kg 5 kg of hardener

Below is an overview of the hardener required per quantity of polyester casting resin, broken down according to the thickness of the object to be cast. We do not recommend using this product as a coating or for layers thinner than 1 centimetre. See the datasheet for more detailed information.

  MEKP Potlife Cured
Thickness 1 cm 1% 25 minutes 10 hours
  1.5% 22 minutes 3 hours
  2% 20 minutes 2.5 hours
Thickness 3 cm 0.4% 40 minutes 2 hours
  0.7% 27 minutes 1.5 hours
  1% 25 minutes 45 minutes
Thickness 6 cm 0.3% 48 minutes 1 hour
  0.35% 43 minutes 55 minutes
  0.4% 40 minutes 50 minutes

Order polyester resin

Polyester resin has a shelf life of 3 to 5 months and can be easily ordered online at Polyestershoppen.com in sizes of 0.25 kg, 1 kg, 5 kg, 20 kg and 230 kg. If you order today before 5 PM Dutch time, your order will be shipped today. Do you have questions about this product or can we help you with something else? Please take a look at our information centre for answers to frequently asked questions. We are also happy to help you by phone at +3185 0220090 and by email at support@polyestershoppen.com.


We have a number of recommendations for working safely with polymers. At Polyestershoppen you will not only find the polymers themselves, but you can also purchase all the protective equipment you need from us. If you have any doubts or questions, please contact our customer service. We can give you advice on how to work safely with polymers.

Safety equipment


Code Description
H226 Flammable liquid and vapour.
H315 Causes skin irritation.
H317 May cause an allergic skin reaction.
H319 Causes serious eye irritation.
H332 Harmful if inhaled.
H335 May cause respiratory irritation.
H361 Suspected of damaging fertility or the unborn child <state specific effect if known> <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
H372 Causes damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
H412 Harmful to aquatic life with long lasting effects.
P101 If medical advice is needed, have product container or label at hand.
P102 Keep out of reach of children.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P270 Do no eat, drink or smoke when using this product.
P314 Get medical advice/attention if you feel unwell.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P405 Store locked up.
P501B Dispose of contents/container in accordance with in accordance with local regulation

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4 Pieces € 8,27 € 2,88