Will rescue you "semi"
Plastic scrap can be found everywhere. House constantly appear old broken things on the street full of bottles and packaging. The lover to do something with their hands may be the idea all gather, to grind and melt it into something valuable.
Novice "caster" to not do this because each type of plastic has inherent properties so that melting would have at different temperatures. In addition, the production of cast parts usually in special installations where it is maintained at high pressure.
Even if you manage to pick the pieces of plastic of the same type and grind them, when melted, it will bubble. So it is best to go to the hardware store and buy the liquid plastic from which the details are obtained is no less durable than the factory. To replace can plastic and epoxy resin. You will also need:
- large capacity;
If you do decide to do something out of plastic scrap, do not do it indoors. A pair of plastic toxic.
Do the form
For casting at home a few plastic parts you will need the master model. To make it out of anything. For you:
paper and many other materials.
Make model parts that will leak. Smother it with petroleum jelly or other lubricant. Then make the form. Becoming increasingly popular forms of silicone. It's difficult to work with this material easy and convenient, but you need to consider several factors. First, the silicone is of two types, potting and coating. Second, each species – its aspect ratio and its viscosity. Regarding the first option, for plastic molding suitable silicone with a factor of 200%.
Note the coefficient of viscosity. The smaller it is, the more accurate will form. This is especially important if you are using a casting silicone. Note also the curing time. If you have casting silicone, the master model is put in the flask (it can be made from steel or perhaps bronze) and fill with silicone. Coating material gently apply with a brush, given all the irregularities. Allow the silicone to harden, then remove the master model.
Flask is a metal container. It should be slightly bigger than the master model.
The casting process largely depends on what you're doing detail. Polyester resin and liquid plastic is good because there is nothing to melt you do not have, but they differ in viscosity and the time of life. These settings are specified in the specifications. Apply form lubricant and fill it with liquid plastic as described in the instructions. Allow the plastic to harden, and then remove the product from the mold.
Advice 2 : How to make a mold for casting plaster
In the manufacture of various articles of plaster can not do without mold for casting. The quality of the shape depends largely on the quality and durability of gypsum products. Modern technologies allow to perform a simple flexible form for casting from materials such as silicone and polyurethane. This form may be made even in a home workshop.
You will need
- - fiberglass;
- - wood particle Board;
- - wooden plank;
- - sculptural clay;
- - silicone or polyurethane;
Prepare the container for pouring. Use any reasonably stiff material, for example, fiberglass, chipboard, wood plank, and even elements of children's designer "LEGO". Sometimes you can pick up and ready shape , or a box of suitable size. If necessary, clean the parts of the future container from dust and possible contaminants.
Connect the details of any shell with glue. The problem is that the container had no cracks and is firmly held as a unit. It is most convenient to connect the pieces of the shell with a glue melt, seasoned in a special gun.
Take nezaterdevshej sculptural clay and evenly lay it to half of the container. The clay is too sticky, so its use is not recommended. Make sure that the surface of the clay smooth and has no cracks.
Prepared in the clay, place the product model. With a pencil make the castles in the form of holes. They needed to in the manufacture of castings in the further part of the form has not changed.
Measure out the necessary amount of forming material. It is possible to calculate the size of the container. You can also fill the container the bulk material, and then pour it in a measuring device for volume determination.
The surface of the model oil separation grease. Silicone grease for the same shape cannot be used. Best suited soap, and fat or wax lubricant.
Mix the components of the molding material in a constant ratio (it is usually indicated in the instructions). Slowly pour part of the contour of the shell in a thin stream. Do this slowly and carefully so as not to cause bubbles.
Wait until the top of the form cured. Then completely remove the clay, being careful not to damage the surface.
Again oil the surface of the model and the form, including locks. Prepare a molding material. When fully cured forms reanimate it apart and remove it from the model of the product. Form ready for casting.
Now connect parts of the resulting shape, tightly pressed to each other. Prepare a gypsum composition and use it for making the desired casting.
Sculpt from clay, of clay, you can create plaster products. Try to design the crafts of plaster, using their hands and imagination. Scope for creating things out of plaster is really huge. The main thing – to purchase dry plaster powder, it is possible to do today in any hardware store, well, to prepare the composition the desired consistency. To create three-dimensional figurines made of plaster with your hands is also very easy.
Otherwise, as they say, and all life is held. Suggesting You take up a fascinating hobby – the creation of various products made of clay, plaster. You will see how it's interesting and exciting. You are the Creator, everything will be done just the way You and only You want. Your ideas take tangible form, which you can touch, pick up. And let it be not works of art, but Your work will bring You much joy and pleasure.