Many anglers prefer to make sinkers on their own, rather than purchasing ready-made ones. Firstly, this is associated with a certain cost savings, and secondly, you can do it yourself by yourself, just as the angler himself wants – both in shape and weight.
Making sinkers, molds for casting sinkers, casting home-made sinkers in the manufactured mold.
You can pour the sinker yourself for any tackle. If we are talking about an ordinary float fishing rod, then you don’t have to pour anything, since you can use any piece of lead that is suitable for weight by simply plucking it with pliers to give a rounded shape, or use an ordinary lead pellet, making an incision in it with a knife.
For bottom gear, weights of a certain shape are needed, and a larger mass – so as not to drag along the stream. They are made predominantly flat and of various sizes. The easiest way is to cast the sinkers in an aluminum spoon, and then drill a hole for the fishing line at the narrow end. The castings are flat convex and do not require additional processing..
As a crucible for melting lead, it is convenient to use an ordinary small ladle made of stainless steel. Previously, the handle is bent and a small casting beak is molded (for example, with a chisel).
Homemade spinning sinkers.
But, perhaps, spinning specialists pay most attention to self-casting of sinkers. In the manufacture of sinkers suitable for spinning fishing, you need to have a more complex shape than just a tablespoon. With this form, casting weights is no longer difficult. It’s clear that you will have to do the molds for casting by yourself. Several options for the manufacture of such forms are given below..
The choice of one or another variant of manufacturing the mold in each case is determined by the presence of the original model of the load, the possibility of manufacturing the mold according to one or another technology and the requirements for the durability of the mold. But before moving on to talking about the shapes of spinning sinkers, some recommendations should be made on the geometric dimensions of weights for lures.
In the practice of a spinning player, weights from the weight range of 5-30 g are used. The tables below show the sizes and masses of cylindrical and spherical sinkers for spinning lures during casting from various low-melting alloys. To receive a cargo of a different weight, you can either change its geometrical dimensions, or, having left the previous dimensions, cast the cargo from another material.
Home-made sinkers for spinning in the form of a cylinder, dimensions and masses during casting from various fusible alloys.
Home-made spinning sinkers in the shape of a ball, dimensions and masses during casting from various fusible alloys.
Molds for casting sinkers made of gypsum, alabaster, cement, potatoes.
And now about the molds for casting sinkers. Most often they are made from gypsum, although other materials, such as ordinary potato, can be used. And it is clear that each form has its pros and cons. The plaster mold allows you to cast high-quality sinkers of complex shape according to a given model, but requires more time for its manufacture.
The advantages of the gypsum mold are the simplicity of manufacture and the possibility of manufacturing relatively complex castings according to the sample. The disadvantage is that this form is enough for 15-20 castings and it takes a long time to wait for the mold to cool.
Stronger and more durable forms can be made from a mixture of alabaster with clerical silicate glue (liquid glass) or from cement, but their production requires significantly more time.
If you need to urgently make a few loads, and there is no gypsum form at hand, you can use ordinary potatoes. Half the raw potatoes need to be cut out. Before pouring, lay the wire frame under the ears in it and fill it with lead. When pouring, care should be taken, since intense vaporization can spill hot lead and cause burns..
A more complex form can be made of two halves, providing them with a gate and an outlet. This method of manufacturing the mold allows casting of several instances of sinkers at low cost for the manufacture of the mold itself. The disadvantages of this method include the fragility of the form itself and the inability to make castings according to a predetermined model. In addition, the quality of the casting is poor..
Making a mold from alabaster for casting a homemade sinker.
First you need a sinker model. You can either use the finished load as a model, or make it from plasticine or any other material. The finished model of the sinker is covered with a thin layer of Vaseline, so that later it can be easily removed from the mold.
A cardboard is the size of a double-match box. Alabaster is taken and diluted with water to the consistency of thick sour cream. A cardboard box is poured with alabaster to half the height. Until the alabaster grabbed, a prepared sinker model descended into it to half its thickness. In places where there will be runner and spur, matches are also laid, also smeared with petroleum jelly.
The time for setting alabaster is given, about 30 minutes. In the resulting half of the form, conical recesses are cut out at the corners. They will then help the halves of the form to fit together without distortion and bias.
A strip of about 1 cm wide is cut out of thick paper and folded in half. It fits into a free space in half of the form with an inward fold. The purpose of this strip is to simplify the separation of the halves of the mold after manufacture. Without removing the model, we apply a very thick soap solution on its surface and on the surface of the half of the mold. You can use the same petroleum jelly). This layer is required to separate the halves of the mold after it dries..
The second portion of alabaster is bred, the box is filled with it to the end. An excerpt is given for about an hour to fully set alabaster. Next, the halves of the form are disconnected, the model and matches are removed, a cone under the gate is cut out. The mold is placed in a warm place and aged until the moisture evaporates. 1-2 hours are enough in the oven, 1-2 days at room temperature and in dry air.
Before the first pouring of lead, the mold should be calcined with a gas plate to completely evaporate moisture, otherwise it will crack during the manufacture of the first instance of the sinker.
Homemade sinker casting in a manufactured mold.
A wire frame is made under the outer loops of the future load, it must be laid in the form. Now it is necessary to combine the halves of the form and fix them relative to each other with several turns of wire without insulation. The molten metal is poured into the mold thus assembled..
If lead alloys are used for the manufacture of a sinker, then, firstly, due to the difference in specific gravities, a load of a lower weight can be obtained, and secondly, due to other mechanical properties of these alloys (fluidity, volume expansion coefficient, melting and crystallization temperature, heat capacity ), you may have to experiment a little with pre-heating the mold. Therefore, if possible, the sinker is still better to pour out of pure lead.
After casting, let the mold cool. The cooled mold can be disassembled, the casting taken out and finalized by removing the gate and the support with the help of cutters. To obtain a high-quality casting, it is better to slightly heat the mold on a metal sheet..
Based on the materials of the book “Fishing tackle and do-it-yourself hunting equipment. Production and repair “.