Medium to Deep Casting Epoxy Resin

From R 522.00


  • Manufacturer's Brand Name: Kristal 50.
  • Clear, UV Stabilised.
  • The cured resin is glossy, hard and suitable for temperatures up to 80degC.
  • For casting in layers of 10 to 50mm. (Layers of 30-50mm require a different mix ratio to layers of 10-30mm.)
  • Typical Applications: Thick layer casting in moulds and river tables.
1.33kg (1.21 Litres)
6.65kg (6.05 Litres)
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Medium to Deep Casting Epoxy Resin

Manufacturer's Brand Name: Kristal 50


  • Used in layers of 10mm to 50mm thick.
  • Clear, UV Stabilised (slow to yellow compared to non-stabilised resin but clear resin will eventually start to discolour outdoors).
  • FDA approved for food contact up to 50oC. (Test method: FDA 21 CFR 177.2600 report number GZ190826027FR)
  • Medium viscosity (medium flow) resin so air entrainment is less of a problem than with higher viscosity systems. 
  • The cured resin is suitable for temperatures up to 80oC.
  • The cured resins is glossy, strong and hard (Shore D Hardness: 80). 
Mixing ratio is 100 Resin : 33 Hardener by weight for use in layers of 10-30mm thick.
Mixing ratio is 100 Resin : 25 Hardener by weight for use in layers of 30-50mm thick.
This resin should not be measured by volume.
Maximum casting volume is 30 litres per cast. 
Layers that exceed the specified thickness or volume are likely to overheat. 
The detailed instruction document that we provide gives tips on how to reduce air entrainment in this resin by slightly warming Part A and Part B before adding them together. 

Typical applications of this epoxy resin

  • River Tables
  • Casting into fairly deep moulds (10-50mm deep)

You can download a PDF document with detailed  specifications and instructions from this website page and if you purchase we will send a hard copy with your order.

Medium to Deep vs. Deep Casting Epoxy Resin

Our Deep Casting Epoxy Resin has a higher flow than this Medium to Deep Casting Epoxy Resin which often makes our Deep Casting Resin easier to work with from an air entrainment point of view. For this reason we usually recommend our Deep Casting Epoxy Resin where the casting layer thickness allows. If you specifically require food contact properties and a little higher temperature resistance and don't mind the slighter higher thickness (lower flow) then use this Medium to Deep Casting Epoxy Resin. 

General points for all resin work

Resins are not simple to work with. Start small and get to know your products and the correct methods.
Preparation and mixing are crucial for any resin project to be successful. Read and follow all instructions carefully. Only mix the quantity that you will use immediately as resins cannot be stored after mixing. The heat generated in a container of un-poured resin or in resin that is applied too thick can reach dangerously high levels. The maximum layer thickness indicated does not apply in all conditions and must be reduced in hot weather and when casting into closed systems with little surface area for heat loss. 
You need to take health precautions when working with resins so read safety and health instructions carefully. The hardener of epoxy resins is an irritant to the eyes, skin and mucous membranes. Avoid direct skin contact an never get it in your eyes. Wear safety glasses, long sleeves and rubber gloves to minimise skin contact. While good quality epoxy resins are VOC free and don't give off significant fumes at ambient temperature, they can give off off fumes if they get hot during curing and many additives such as colourants do give off fumes. As a minimum always use resins in a well ventilated area and don't let them cure in your bedroom for example. If you work with them regularly or on large projects then wear a suitable respirator.
Keep out of reach of children.
Pack Size
Unit Size
1.33kg (1.21 Litres)
6.65kg (6.05 Litres)
Starter Pack
Starter Pack

How to calculate the amount of resin required:

You must use a scale and resin mass. You cannot measure this resin by volume.
For a roughly rectangular shape multiply as follows:
Resin required in kg = Surface length in m  x  Surface width in m  x  required resin film thickness in mm x 1.1
For a roughly circular shape multiply as follows:
Resin required in kg = 3.14  x  Circle radius in m  x  Circle radius in m  x  required resin film thickness in mm x 1.1
If your rectangular surface is 1.2m x 60cm and you require a film thickness of 25mm
Resin required in kg = 1.2m * 0.60m * 25mm * 1.1    = 19.80kg of resin
Now work out how much of Part A and how much of Part B you need to give you the total requirement of 19.80kg
Ratio for this resin is 100A to 33B PBW (PBW = parts by weight).
To get 19.80kg total resin:
kg Part A required = 19.80/133 * 100 = 14.89kg 
kg Part B required = 19.80/133 * 33 = 4.91kg   
If you cast 30-50mm thick then use ratio of 100A to 25B PBW (PBW = parts by weight). In the above formula 133 will become 125 and 33 will become 25. 

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