If you have a flat, fragile part that needs to be secured against breaking, there’s a way to make it tougher. Today we’ll show you how to harden a model using resin and glass mat.
Be sure to check out the previous episode where we soldered rivet nuts into 3D printed objects: Episode 02
Prepare: a can of polyester resin, a hardener that should come in the same box, textile glass mat, a container to mix the ingredients, a paintbrush and scissors.
Cutting the Mat
Cut the proper shape from the mat. The piece should be a little bigger than the part it will cover.
Mixing the Ingredients
Mix the resin with the hardener. Use 100 grams of the resin for every 2 or 3 grams of the hardener.
Applying the Resin
Put the first layer of the resin onto the whole surface you want to harden. Stick the mat to the model and apply another layer of the resin so that it soaks through the mat.
Cutting the Excess Material
Cut the excess material. Leave the model to dry for about 45 minutes in 20°C.