A DIY Guide to Mixing Resin and Catalysts
This entry was posted on Aug 13, 2015 by Richard FoulkesPolyester resin, catalyst, acetone, top coat and fibre glass matting, we have it all! But once you’ve bought your materials, do you know how to use them? Don’t worry, we’re here to help.
Here is a step-by-step guide on how to mix resin and catalyst:
How to Mix Resin and Catalyst
You will need:
A smooth mixing surface
Stir sticks
Flathead screwdriver
Step 1: The first thing you need to do is put on a pair of gloves. Then open the polyester resin container. If you opt for a canned version, the flathead screwdriver will help you to loosen the lid.
Step 2: You then want to give the resin a good mix with a stirring stick or heavy duty mixer as this kind of material often settles to the bottom of the container. Before you move on to the next step make sure the resin is mixed well and consistent.
Step 3: Decant the amount of resin you’ll need onto a clean smooth surface (1kg at a time for best results) and then consult your measurements. Catalyst and resin usually come in proportioned containers, for example half a can of each should be mixed. This usually works on a ratio of 1% to 2% catalyst to 100% resin ratio. Pour the correct amount of catalyst into a 15ml dispenser.
Step 4: Slowly push out the catalyst and mix the two products together with a tool that can be thrown away after use. Stir sticks, like those you use for paint, are ideal. Then throw the stick and dispenser tool away as soon as you’re done with them to avoid contact with other items.
Step 5: Apply your mixture using either a roller or brush depending on the size of space you are covering and wait to dry. You may also want to dispose of your roller or brush.
Top Tips for Mixing Resin and a Catalyst
- The warmer the conditions, the quicker the mixture will dry.
- Make sure your project is slightly warm before application to avoid condensation. A hairdryer is ideal for this in many cases.
- The more catalyst you add, the quicker the mixture will harden, however, it’s important to follow the strict measurements for safety reasons. Plus, adding too much will cause the polyester resin to crystallise and become brittle.
Safety Warnings!
Catalyst is a corrosive material and is highly flammable. As a result, heat and direct sunlight can affect it, in some cases rendering it useless, so make sure to store this material in a cool dry place such as a garage.
When mixing, ensure you don’t stir too vigorously and splash or spill any material. You should also wear gloves and safety goggles if available. Avoid skin contact by wearing protective clothing and if contact does occur, seek medical attention immediately. Keep out of the reach of children and/or pets.
Would you like to learn more about resins and catalysts, or any other product we have available here at Speedy Plastics? Then give our dedicated helpline a call today on 0844 8586 670 or take a look at a few of our other informative blog posts:
