Advice 1: How to make rosin

Rosin is applied in soldering of various metals in the electronic industry and all kinds of repair work at home. This is a solid crystalline substance is also needed when cooking some protective varnishes and mastics. Rosin dancers rubbed the soles, and the musicians bows. So its application range is very wide. To make the rosin can be themselves.
How to make rosin
You will need
  • - the resin of coniferous plants;
  • - metal pot or the Bank;
  • - wooden shovel;
  • - cardboard boxes-forms.
Manufacturer of rosin start by gathering resin. A base resin of all pine trees, but is most often used fir or pine. For the preparation of rosin on an industrial scale SAP collected from the trees for felling. In this case, made the notches in the lower part of which is fixed a metal chute or funnel. According to him, the resin flows in, tied to a tree receptacle. A sufficient amount of resin can be collected by logging or in a sawmill, where harvested timber is dried softwood. The resin is very often acts on the lumber and on fresh stumps. SAP is collected by winding it on a clean wooden stick. You can scrape it off with a scraper or with a spoon in a metal can or pot.
A pot or jar with turpentine put on fire. It is best to prepare a resin on a fire outdoors. The resin will melt and boil, releasing a pair of turpentine. Periodically stir the contents of the pot, removing from the surface of the foam and pop-up waste. Heat the resin until, until you stop the boiling and the allocation of turpentine. In the process, avoid strong fire - otherwise the tar fumes can be ignited. If this happens, cover the pot with a thick cloth. Simmer water in this case is impossible.
After the termination of the boil you in the pot will turn transparent viscous liquid characteristic amber color. Pour it in the prepared cardboard shape. You can pour resin and metal pans, and plastic, but cardboard it is easier then to get. If necessary, you can filter the resin through a fine metal mesh. Keep in mind that this substance hardens very quickly, so we have to work too quickly. The remains from the bottom of the pot into molds do not pour, there is usually accumulate debris. Leave the boxes to freeze in the air. The cooled resin is ready for use.
Vapors of turpentine is toxic, especially harmful they affect the heart.
Useful advice
Released by cooking rosin turpentine is also possible to collect and use. If you are cooking resin in summer, resin collect in an old metal kettle. On the nose, put the copper tube of appropriate diameter. Bend it in the shape of the coil, the other around a metal pipe. The end of the tube put in an open top container. The tube around which is wound the coil, pour cold water. Couples will condense in the coil and drain into the vessel. Kettle lid must be closed. At the end of the boiling tube with the kettle off. Drain the resin through the nozzle. Turpentine cool, pour into vessels and tightly zakuporte.

Advice 2: Why the need for rosin

Small bottles with rosin sold in many hardware stores. Looking at them, you may have wondered what is this substance. It has many applications in various fields.
Why the need for rosin
Rosin is divided into two types: natural and artificial. First obtained from wood tar (usually pine), the second of cellulose. Natural rosin is considered to be of higher quality. But keep in mind that to use either resin or cellulose directly as rosin not - it must first be subjected to special treatment.This substance has long been used as a flux for soldering. Apply rosin for this purpose, both in pure form and together with other, more complex fluxes, for example, an alcohol solution or a special composition of LTI. How to clean rosin, and most fluxes based on it possess the important property of pH-neutrality. This means that they, unlike the acid flux, don't spoil over time, the treatment site and create almost no leakage current. Soldering of electrical circuits and electronic circuits can be done only with the neutral fluxes.Musicians playing stringed instruments, rubbing rosin bows. However, use it in conjunction with instruments that use bows don't require is pointless. Recommendation grease rosin mediator, sometimes expressed in the forums guitarists, has no Foundation. In ballet, a substance used to improve grip shoes to the floor, and in sports - athlete with a barbell, kettlebells or dumbbells.In addition, rosin is used in the production of artificial materials as both primary and auxiliary component. She is part of many flexible and rigid polymers, and even some detergents. And in the past it was used to avoid slippage in the belt gear - but now don't do that anymore, because it invented many devices for automatic maintenance of optimum tension.It should be remembered that while in the air small particles of rosin it is unacceptable to use open fire.
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