An epoxy is a two-part adhesive that forms when you mix epoxy resin and hardener. The two substances are stored in different containers and are only mixed together when you’re ready for gluing – which you can do using a double syringe, for example. You should keep the mixing ratio 1:1, otherwise the resin will not cross link.
Epoxy is highly versatile and extremely strong, making it perfect for DIY projects. It is also a gap-filler, which makes it perfect for reconstructions. On top of that, epoxy can be sanded, drilled and painted. This gives it a much wider range of uses than standard glue.
After you mix both components (resin and hardener), the pot life begins. That is the period during which the parts to be bonded can still be moved and changed. The pot life can range from a few minutes to a couple of hours depending on the glue you use. After the pot life, the glue needs several hours to reach maximum strength.
They are very high performance adhesives providing high strength, high fatigue resistance, and high temperature resistance. These curing film adhesives require cold storage and have limited shelf-life after warming to room temperature. They are especially suited for bonding and laminating large areas.
Epoxy shelf life can last many years when resin and hardener are properly stored at room temperature and in closed containers to prevent contamination. Those who have used polyester resins know that its shelf life is only about six months before it turns to a useless jelly-like substance.
Epoxy adhesive is designed to last, so you will want to avoid getting it on your surroundings if possible. If you do end up with a mess, you’re not stuck with it for life. If you get epoxy on your skin, you will want to remove it as quickly as possible. For a more natural approach, try using vinegar. Simply saturate a cotton ball and rub the area until it softens. You can also try nail polish remover with acetone.
- Roughen the surfaces you want to bond with sandpaper or by carefully draw-filing the areas. Remove dust, grease, and dirt from the surfaces.
- Cut the end tips of the application syringe. Turn the syringe up and depress the syringe slightly, pushing the air bubbles to the top.
- On a disposable surface, push the double plunger to dispense equal parts of the resin and hardener. If your epoxy does not come with a tray, it would be a good idea to purchase one. If you don’t have the time to purchase a tray, use a disposable plate or a well-cleaned plastic container.
- Retract the plunger slightly, wipe the application tip clean, and replace the cap.
- Quickly mix the resin and hardener until completely blended (1-2 minutes).
- Add a small amount of the glue to the items you are bonding, carefully assemble them, and press them together firmly. Set and cure times vary for different products, so check the packaging or manufacturer’s instructions for details.
- Remove excess epoxy