WoodCast 30 – 40kg


All prices shown include VAT

WoodCast 30 has excellent high-gloss wood coating/casting features which are ideal for river table casting, wood laminating, and epoxy artwork. Its high performance highlights good mechanical and excellent self-leveling properties. This product is not moisture sensitive and can be utilized in humid environments.

WoodCast 30 Part A - 25kg


Out of stock

WoodCast 30 Part B - 15kg


Out of stock

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Safe & Secure Shipping to all South African addresses.

When Do I Get It?

Shipping time is 2 - 5 business days. Excludes weekends & Public Holidays.

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In-Store Sales

Shop in-store at AMT Composites in Johannesburg, Cape Town & Durban.

  • Shipping may only be to a physical address within the borders of South Africa. No P.O Box’s allowed.
  • Shipping to outlying or remote areas like farms and game reserves may attract an additional fee.
  • The delivery time to city areas is usually between 2 and 5 working days*. This excludes weekends and public holidays. *Reckoned from time of dispatch to time of arrival to client. This is an estimate and not guaranteed.
Courier Service
We use 4 courier companies for delivery. With sophisticated track and trace equipment, you can pinpoint exactly where your parcel is, from the moment it is dispatched by us, until it’s safely handed over to you the recipient. Your parcel is well packaged and wrapped before delivery. All parcels can be insured for the journey to your door.

We charge a weight based shipping fee.

  1. Standard Shipping 0 to 5kg – R99.00
  2. Shipping Shipping 5.1 to 10kg – R118.00
  3. Standard Shipping 10.1 to 15kg – R140.00
  4. Standard Shipping 15.1 to 20kg – R180.00
  5. Standard Shipping 20.1 to 40kg – R220.00
  6. Standard Shipping 40.1 to 80kg – R250.00
  7. Standard Shipping 80.1kg and more – R400.00

Shipping rates are provided at checkout.

Our delivery service only runs from Monday to Friday. Saturday morning deliveries can be done by special arrangement only and at an additional charge. Please contact us to arrange. We reserve the right to re-quote the delivery fee should this become too expensive.

At AMT Composites we want you to be 100% happy with any purchase you make from us.

Changing your Mind / Right to Cancel

If you change your mind for any reason, goods can be returned to us for a full refund if notified to us within 7 days of delivery; you have a further 7 days to dispatch the goods for their return to us. Goods returned after 7 days will incur a 15% restocking fee of the items being returned.

NO GOODS manufactured or sold by Advanced Materials Technology Pty Ltd will be accepted for a credit if returned after one (1) calendar month of original invoice date.

To return goods that are not faulty (i.e. because you changed your mind) they must be unused and, in the condition, they were delivered to you in. This does mean that, unless found faulty, we are unable to accept returns for:

  • Opened containers of resin, hardener, silicone or chemical release agent, unless found to be faulty or defective.
  • Unrolled and improperly re-rolled fabrics, unless found to be faulty or defective.
  • Any product that you have subsequently cut, shaped, broken or modified, unless found to be faulty or defective.

Refund of Delivery Charges (Cancelled Orders)

If you return an order in its entirety, then your outbound delivery charges will also be refunded (for orders within the South Africa’s Local Area’s.

If you return only part of an order, then the outbound delivery charge refund will be calculated based on the total postage cost of the original order (using standard service) minus the cost to send the items you are keeping (using standard service). Due to the way that shipping costs are incremented, this will often result in no delivery charge refund being due.

Faulty or Defective Goods

Any goods found to be faulty or defective and notified to us within 7 days of delivery can be returned to us for a full refund.

Refund of Delivery Charges (Faulty/Defective Goods)

If you are returning faulty or defective goods, then your outbound and return delivery costs will be refunded in full (for orders from within South Africa’s Local Area’s.)

In the event that you are returning faulty or defective goods which were ordered as part of a larger order then the outbound delivery charge refund will be calculated based on the total postage cost of the original order (using standard service) minus the cost to send the items you are keeping (using standard service).

Please check the box to acknowledge our return’s policy, by doing so you agree to our Return’s Policy of AMT Composites stated above.


Get true expertise & assistance. Speak with one of our professional consultants in Johannesburg, Cape Town or Durban. Call 011 392 4232.

WoodCast 30 is an optically clear commercial grade casting and encapsulation two-part epoxy resin system.

Application method

  • Brush
  • RollerSqueegee
  • Pour/casting

A Propane burner can be used to pop bubbles that appear on the surface.


Preheat the epoxy to 25°C – 27°C before mixing, this will reduce the viscosity and make pouring easier. WoodCast 30 can also be used to make River Tables.

WoodCast 30 can also be Blled with a variety of materials for different visual effects such as wood chips, Aluminum Powder, Marble Powder, Stone Chips, Pebbles, Iron Filing, Copper, Bronze or Brass Powders, Cast Magic Powders.

WoodCast 30 can also be pigmented. After preparing the mix, mix thoroughly for at least 2 to 3 minutes and apply using your preferred method. The “Dirty Pour” is one such application method with many YouTube videos on the technique. https://www.youtube.com/watch? v=MrVKifoQ0M0

Do not exceed 10mm thickness per application, allow to cool before mixing & adding additional layers. It is advisable to do tests with fillers and pigments before committing to a job.

Safety & Handling

Epoxy Resins & Hardeners are chemicals. Normal Health and safety precautions apply when handling these products.


  • Adequate ventilation
  • Use of gloves and safety glasses
  • Use of barrier creams
  • Use of a skin friendly hand cleaner

Never Use any solvents to clean your hands.


  • Measure Accurately (Preferably on a scale)
  • Mix parts A & B thoroughly (Use flat paddle and mix for a minimum of 2 minutes)
  • Allow Adequate time to fully cure before using


  • Applying on Oily or Contaminated Surfaces
  • Apply to damp or wet surfaces
  • Working in a Cold Environment below 18 °C

Storage and stability

The shelf life is 24 months in a dry place and in original unopened containers at room temperatures between 18 – 25°C.

What is the best way to sand/polish WoodCast 30 Clear Epoxy to a high gloss finish when making a tabletop?

There is a reasonable amount of work required, therefore we have developed a 5 step sanding and polishing process that gives good results:

Step 1:

Planing or Routing wood/epoxy to achieve Oat surface –(This step is not always required as the casting may be very Oat and smooth ) What to take off the top? a) We advise a minimal cut of 1mm or less. Be careful; if you cut too thick, the epoxy will grab the planing knives and throw the piece. A thicker cut can also generate excessive heat that will affect the surface Bnish. Or b) With a router sled remove 1mm or less per pass.

Step 2:

Drum sanding – can even out the top or both sides of the piece, depending on the machine. Feeds should be medium with grits of less than 120. Finer grit paper of 220 or higher should be used at slower speeds. Sanded depth will vary, but 0.5 to 1mm per pass should be the maximum. Be careful to make sure sandpaper is clean and free of material as the epoxy can leave a residue on the paper and gouge the material on the next pass.

Step 3:

Random Orbit Sanding a) use a step up dry sanding method beginning at 80 open grit and proceeding in Bner open grit paper increments; 100, 120, 180, 240, 320, 400, 600, 800, 1000, 1200, 1500. b) wet sand using foam backed sanding pads at medium speed at 2000 grit. Clean all residue between sanding steps. c) Wet Sand at low rpm using 4000 grit foam backed sanding pads, using plenty of water at all times.

Material should be clear and slightly hazed. Do not over work or overheat .

Step 4:

Polishing – use a variable speed, 2000 rpm polisher. High quality plastic polishes are formulated to be used at speciBc speeds. We recommend Mirka Polarshine 10 medium-coarse compound. (Or alternative) At each step, taking time to polish and keep pads lubricated with Mirka compound. a) Using a lamb’s wool polishing pad, buff at 2000 rpm until surface imperfections disappear, b) using a 2000 grit foam polishing pad, buff at 1800 rpm and c) using a 3000 grit foam polishing pad, buff at 1600 rpm.

Step 5:

Finishing – apply Mirka Polarshine-UF3 (or alternative) using a clean, new 3000 grit foam applicator pad at 1500 rpm, buff to a brilliant finish.

Important: Follow safety precautions on the technical bulletin when mixing and pouring WoodCast30.
When machining, sanding or polishing fully cured epoxy, wear a NIOSH approved respirator, protective eye-wear and clothing to minimize skin contact. Results may vary depending on how closely directions are followed, quality of equipment and aptitude/experience of artisan. In all cases, AMT Composites is not responsible for the outcome due to the above variables. If results are in question, we recommend testing on a small test epoxy casting before scaling up to a large project.

Weight 40 kg
Dimensions 60 × 60 × 60 cm


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Woodcast 30 Epoxy Resin – How much do I need?

Woodcast 30 Resin Calculator

Woodcast 30 Resin Calculator

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Step 1
To calculate the volume of resin required, measure the length, width and depth, and convert to liters.

A table 2000mm (L) x 900mm (W) x 50mm (D) deep converted to centimeters is:
200cm (L) x 90cm (W) x 5cm (D) = 90000cm³

Divide the answer by 1000 to get liters.
90000/1000 = 90L

Step 2
Now you need to convert the litres in Step 1 to kilograms as Epoxy Resins must be accurately weighed on a scale, not measured out by volume.

To do this, you multiply the total litres by the Specific Gravity of the resin you are using.
For this build we are using WoodCast 30 with a Specific Gravity of 1.05

Multiply the 90L x 1.05 = 94.5Kg
(Litres x Specific Gravity)

This is the Total Weight in Kilograms of Woodcast 30 Resin & Hardener you will require.

Step 3
Now you need to work out what the separate Resin & Hardener portions are.

To do this you need the know the Mix Ratio of the Epoxy Resin System you are using.

Resin portion required
The Mix Ratio for WoodCast 30 is:

Divide the 94.5kg by 1.60
(Weight/Mix Ratio)
This equals 59.1kg and is the Resin portion required.
You will need 59.1kg of Resin.

Hardener portion required
To calculate the amount of Hardener required, multiply the 59.1kg by 60%.
(59.1 X 60% = 35.4kg)
You will need 35.4Kg Hardener.

Check your calculations by adding the 59.1kg Resin + 35.4kg Hardener.
This should equal 94.5kg (The total weight of Resin & Hardener combined)

To summaries: We need a Total of 94.5Kg, of which 59.1kg is Resin and 35.4kg is Hardener.

The above calculations is obviously for a table without any wood.

Depending on the shape of the wood used in your river table, you will need to calculate the volume of the river between the two piece and/or any additional areas that should include Resin.

You can use the example below to help you calculate the amount of resin needed.

In the real world we are not building a slab of Epoxy Resin 2000mm (L) x 900mm (W) x 50mm (D) deep. Rather, we are using Epoxy Resin with Wood to create an Epoxy Resin River Table.

Thus, the amount of Epoxy Resin needed will be different. How do we go about calculating exactly what we will need?

For tables with wood and live edges it is sometimes difficult to calculate the exact amount of resin required because of the irregular shape of the wood.

The length and depth are easy, but the width varies, so you need to work out the average width.

To do this, see the example illustrated below:

Formula to calculate the required amount of Epoxy Resin needed
Length x Average Width x Depth

Average width is the sum of the measurement divided by number of stations – 8 stations in the diagram below.

Station 1 – 10.5cm
Station 2 – 13.6cm
Station 3 – 11.4cm
Station 4 – 19.4cm
Station 5 – 20.2cm
Station 6 – 14.6cm
Station 7 – 11.8cm
Station 8 – 8.3cm

Total Stations 1+2+3+4=5+6+7+8 = 109.8cm

Divide this Total by the 8 stations.
109.8/8 = 16.3cm

This is your average width, and the width you will use in the calculation steps above (Steps 1, 2 & 3) to calculate the amount of resin required for your project.

Step 1
Calculate Volume

200cm (L) x 16.3cm (W or Average Width) x 5cm (D) = 16300cm³
Divide the answer by 1000 to get liters.
16300/1000 = 16.3L

Step 2
Convert to Kilogram

16.3L x 1.05 (Specific Gravity of WoodCast 20) = 17.1kg
17.1kg is the Total Weight of Resin & Hardener required.

Step 3
Calculate Mix Ratio of Resin

Calculate Resin portion required
17.1kg/1.60 (Weight/Mix Ration of WoodCast 30 100:60)
10.7kg of Resin required
Calculate Hardener portion required
10.7kg x 60% = 6.4kg
6.4kg of Hardener required

Check Calculations
Resin required + Hardener required should equal Total Weight required.
10.7kg (Resin) + 6.4kg (Hardener) = 17.1kg