Use a darker colour to paint crevices to give the mountain depth. Try to vary the size and length. Tape a paper towel tube into the centre of the cardboard. Then, apply more plaster with a putty knife, until none of the burlap is showing. Step 2: Sketch It Out Sketch a rough image … Image Source. In either case the plaster inpregnated towels can be draped over the scenery. I use a glass rectangular Pyrex dish when making mountain scenery with plaster soaked industrial towels. Then, cut some burlap into strips and dip it into the mixed plaster. The paste then hardens and can be used to cast items in a mold. It has to be aluminium flyscreen (not fibreglass or stainless). In order to make a mountain from Plaster of Paris, it is helpful to follow a few guidelines that will ensure the mountain will be firm enough to be used as a volcano model. The beauty of flyscreen for the base structure of a mountain is that it holds its form slightly once you scrunch it up. Image Source Heat Resistant Plaster. Tear apart cotton wool balls and glue them along the summit, or peak, of the mountain to represent snow. It is easier to clean afterwards than plastic bowls. This type of plaster of Paris is used on those surfaces that will be exposed to heat over 50 degree Celsius. Step 1: Choose a Base Find a sturdy base made of wood or cardboard that is wider than the size you want your finished mountain to be. Use about two inches of water and mix as you did in Step 3. Cover the armature with the plaster-covered cloth, wrapping it like a mummy. Start by making a wire framework in the shape you want--I'd use chicken wire or rat wire. Making Custom Rocks with Plaster of Paris. Cover your entire framework in this manner. Plaster of Paris is a powder made from calcium sulfate that forms a paste when mixed with water. Image Source. Some modellers prefer plastic bowls because they can be bent to pop out the old dried plaster. This is an advanced material of Gypsum Plaster of Paris. Don’t get me wrong, rock molds are great for cranking out rocks fast, but it can become repetitive if you don’t have enough variety in molds. For this mountain we used aluminium flyscreen and Plaster of Paris. Image Source. This is one of my favorite ways to create custom rocks on the layout. Small batches of Plaster of Paris are a necessity – it goes off real quick when working. Crumple up newspaper into a mound, and tape the mound onto the cardboard around the paper towel tube. Place a sheet of cardboard onto a flat surface. Rip strips off of an old piece of cloth. All you need to make a mountain form are paper scraps and supplies you probably have lying around your kitchen right now. Image Source. It is used in coating walls and chimney bases to make them heat resistant. It’s the most fun, messy, and it allows for a lot of flexibility when compared to rock molds. Paint the mountain the desired colours. Dip the cloth strips into the new batch of plaster before it thickens. Make a new small batch of plaster of Paris. With some paint and accessories you can give it a finishing touch to make it look authentic. In school, children often make dioramas, miniature representations of a scene, as a way of displaying what they have learned about a particular historical event or cultural society. Look at photos of mountains to get an idea of the colour scheme you will use.