How to make a do-it-yourself rotary vise mechanism. Desktop locksmith vise - a device, do-it-yourself manufacturing

To fix parts during processing, special clamps are needed. It is not difficult to make a vice with your own hands of different sizes, you will need drawings with dimensions, as well as a technological sequence of work.

A home master usually has a lot of different tools in his arsenal. However, it is difficult to overestimate the role of the vice. They are used to install parts of different sizes, so in one workshop there may be fixing devices of various types and designs. In metalworking, mainly metal products are used, and wooden devices are widely used for woodworking. Some craftsmen equip their work tables with homemade bench vise. It happens that you need a special fastening tool.

Vice elements

The clamping device must have several basic elements:

• the sponge is fixed;
• sponge is movable;
• screw mechanism;
• cross corner;
• movable sponge bracket;
• slider;
• main support (longitudinal corner).

Scheme of homemade vise

Structurally, the solution of the clamp may be different. Sometimes even ordinary pliers are used as starting materials.

The simplest designs

It is customary to determine the following types of vices according to the features of the device:

• massive stationary. These are usually placed on one of the corners of the workbench. In forges, it is customary to install on a separate support, installed on a powerful foundation;
• rotary can be used from several sides. If necessary, the location of the sponges is oriented in different directions;
• machine provide for use on drilling machines. You can place similar products on milling tables, planing or slotting equipment, as well as on welding lines;
• wedges differ in that the design has a peculiar appearance. Such clamps make it possible to develop rather large pressing forces of the fastened parts;
• Moxon's parallel constructions. Their feature is the use of not one, but several screw clamps. Long parts in different parts are fixed at different points;
• vertical are used to process products that have a large height. The support of such a vise can be at the bottom, and the processing zone is located at the top.

Development of the vice design

Drawing homemade vise

If you want to make your own design yourself, you need to prepare drawings (sketches). As a basis, you can take rolled corners, channels, I-beams. In industrial devices, cast iron is used. Small in size can be made from a channel.

DIYers use different types of wood or rolled metal.

As part of wood products, metal elements are used:

• screw. Studs with standard thread are used. If there is a jack available, then a rectangular thread will be used in the product being developed;
• screw. It is selected for the existing clamping screw;
• fasteners are used to give rigidity.

According to the execution of the device can be:

• stationary vise, permanently placed in one place;
• portable (easily removable) vise. They can be quickly removed, placed in a vehicle for work at the place of repair.

Step-by-step technologies for making a wooden vice at home

Workbench design

At home, a vise for a workbench is made in the following sequence.

	Wide parallel vise made of wood. The width of the jaws is 600 mm.
	The end part is lined with steel plates 4 mm thick.
	Billets are cut out of a birch board. The choice of birch is explained by the fact that this wood is characterized by high strength and hardness.
	The surface of the boards must be brought to the ideal. Grinding tools are used. Finishing is carried out with skins with a grain of 120 ... 180 units.
	A board is glued to the end, which will serve as a fixed sponge.
	Additionally, the board is fixed with M5 screws with washers with a diameter of 20 mm.
	Guide bushings for rods will be made from birch bars 100x150x50 mm.
	They drill holes with a diameter of 20 mm. The rods themselves will be made from tubes Ø 20.
	Lead screw M24 and guide rods. The length of the screw is 450 mm.
	Pre-assembly of guide assemblies.

	In order for the movement to be carried out strictly in a straight line, a long nut is needed. But it can take a long time to find one. It's easier to do otherwise. 1 - take a strip 180 mm long (width 33 mm, thickness 5 mm); 2 - screw two nuts onto the screw; 3 - set the distance between the nuts 140 mm; 4 - weld the nuts to the strip two nuts. You will get a long support that will reliably move the movable part of the vise.
	During installation, the screw and guides are located under the table. In the photo you can see how the design of such a vice is assembled.
	The movable sponge rests on a metal support.
	To move along the screw, you need to weld the washer. It will not allow the moving part to move along the helical surface.
	The handwheel is machined from a wood fragment.
	After turning, a rather comfortable handle is obtained.
	A nut is pressed inside the handwheel.
	To fix the nut, it is poured with epoxy.
	To fix the overall parts, dowels with a diameter of 20 mm are machined. They can be mounted on sponges as well as on a table.
	A hole Ø 16 mm is drilled in the handwheel. A wooden rod is inserted into it. This makes it easier to rotate and fix parts.
	Ready-made construction of a wooden vise. Several rows of holes for pins are visible on the table. By rearranging the reciprocal stops, it is possible to fix workpieces of a rather large width.

Making a wooden table-mounted vice

Another design is used in carpentry. This type of fastener is installed on the table. They can be additionally strengthened with clamps.

	Used solid oak. It must be dried in a special mode, which includes not only drying. Modes alternate with humidification. Then the appearance of cracks is excluded. In this design, the upper part of the jaws is of small width (only 60 mm).
	The bar is placed on the table, and then marked.
	The bar is planed.
	Cut out individual pieces. The dovetail mount is considered the best.
	The fixed part is machined separately.
	A working screw is machined on a lathe.
	A rectangular thread is cut.
	A hole is drilled at the end where the rod is inserted. With its help, the screw rotates.
	A base plate is cut from a strip 6 mm thick.
	Holes of large diameter are drilled by fixing the part in a four-jaw lathe chuck.

	Finished plate with Ø 20 mm hole.
	Making additional cuts.
	The finished product is used to fix blanks in the manufacture of small softwood sculptures.

Simple wooden vise

	Apple bars are used.
	The base is a board 30 mm thick, 100 mm wide and 200 mm long.
	In addition, three more elements have been sawn. They will serve as sponges and intermediate support. Their dimensions: width 100 mm; thickness 30 mm; height 40 mm.
	An eyebolt with an M10 thread is used as the screw.
	Additionally, you will need M8x70 bolts with nuts.
	Holes for M8 bolts are drilled on two bars.
	Additionally, two bars are drilled for M10 thread.
	The nut is pressed in. Additionally, a plate is used to fix the screw.
	It remains to collect the elements on the base board.

	M8 bolts are used to install bars.
	The fixed jaw can be installed in several positions. Therefore, parts of different widths can be fixed in a vice.
	Vices are ready. They can be used to work with wooden blanks.

Production of metal vise

Small machine vise

	Required for manufacturing: a plate with a thickness of 8 mm. Its width is 80 mm, and its length is 120 mm; 2 full-bodied squares 20x20 mm; 2 isosceles corners with a shelf 20 mm; profile pipe 20X20x1.5 mm.
	The used parts are tried on the plate.
	The corners will serve as guides for the pusher in the vise.
	The length of the corners is 60 mm. The pipe has a length of 45 mm.
	An M10 nut must be installed inside the profile pipe. You will need to saw through the window; a nut will be installed in this window; the nut must be welded in place.
	For making wine, a rod Ø 10 mm was used, an M10 thread was cut on it.
	Having fixed the profile pipe in a vice, they make a cut under the nut.
	Fitting the nut in place is made.
	It is necessary to file two corners of the nut, then it will enter the groove formed.
	The nut is installed in place. It needs to be boiled. A hole is pre-drilled on the reverse side, through which the reverse side of the nut will be welded.

	Welding is done from above.
	Then the reverse side is also boiled.
	The surface of all parts is polished.
	A hole Ø 10 mm is drilled in a 50x30x6 mm plate.
	A notch is cut into the squares. It will fix the parts fixed in a vice.
	Prepared parts are laid out on a workbench. The device is to be assembled.
	A fixed sponge is welded. Having established a profile pipe as a determining direction, the corners are welded. The stroke of the movable sponge will be 30 mm.
	From above you need to weld a plate with a width of 20 mm. It will limit vertical movement. You will need to fix the profile pipe to the movable sponge.
	Part of the welding work has been completed. The movement of moving elements is checked.
	A nut is welded to the screw. It will not allow him to move along the axis. The plate is on the back. It must also be firmly fixed to the supporting surface of the vise.

	Fitting parts in place.
	Having welded the plate, a small vise is obtained.
	You can conduct a trial use by fixing the vise on the table.
	Parts are secured securely.

Making comfortable and high-quality homemade vise is quite simple. Even easier than knitting. They may be needed in cases where it is necessary to securely fix a part or product. An additional advantage of such vices is their low cost to manufacture, since not everyone can afford to purchase a serial model.

Factory vise models are made universal, so they cannot always fix absolutely any detail well. And also they have a large mass and dimensions. Do-it-yourself vices can be made the most convenient for performing a certain type of work. This will help increase labor efficiency and reduce time costs.

Any craftsman who is constantly working in his workshop knows that it is difficult to do without such a tool as a good vise. Such a clamping device helps to perform various operations with wood, plastic and metal products. The use of a vise can guarantee efficiency and good accuracy in various kinds of work. It will also ensure human safety. When it is not possible to buy a factory model of such a device, then it is quite easy to make it yourself. This operation will take little time and effort.

Homemade vise is usually divided into the following types:

1. Locksmiths;
2. Carpentry.

Drilling machine manufacturing

Necessary materials

Homemade vise for a drilling machine at home is quite simple to make. They do not need complex calculations and design developments. On the net you can find a lot of high-quality drawings of a bench vise. A very simple, but high-quality design is made using iron pipes or a channel.

To assemble a bench vise with your own hands, you will need the following materials:

1. A small iron pipe that will serve as the internal moving part of the device;
2. A smaller iron pipe that will act as an external fixed part;
3. Large nut size M16;
4. Large screw size M16;
5. A special knob through which the rotation will be transmitted to the screw;
6. Two metal supports that will fix the fixed part on the bed;
7. Two pieces of a metal rectangular profile that will serve as vise jaws;
8. Several lock nuts size M16.

Locksmith vice

To assemble such a home-made structure, it is necessary to begin with the fact that a flange is attached to the edge of the end of a large metal pipe, which will be the fixed unit of the device, using a manual welding machine. Weld a nut M16 in the center of the flange. Further, another flange must be welded to the end of a smaller iron pipe and a lead screw must be passed into it.

Another nut must be welded to the edge of the screw, which will be a fixing element. The end of the screw to which the nut is attached must be passed through a small diameter pipe, and then inserted into the through hole of the flange. It is worth remembering that the nut must be screwed to the flange from the inside.

On the lead screw, which is located outside the flange, it is necessary to put on the washer and screw on the nut. Further, it is securely welded to the screw. Another washer should be installed between the surface of the metal flange and the nut. This will help reduce the friction force between them. At this stage of work, you must be very careful and avoid mistakes.

After assembling the movable assembly of the fixture, you need to insert it into a larger metal pipe and screw the other end of the screw into the other flange. In order to attach a knob to a screw that protrudes slightly from a smaller pipe, it is worth welding a nut or front sight to it. In its through hole and you need to skip the collar.

Good clamping jaws are worth making from small rectangular pipes. They need to be fixed to the fixed and moving parts of the device. To make the vise much more stable, several supports must be welded to the bottom of the fixed iron pipe. Their role can be played by rectangular pipes and pieces of corners.

A small pipe can also rotate when the lead screw is rotated. This makes the application of such a design very problematic. To avoid this, it is worth making a small slot on top of the fixed pipe, and screw the lock into the moving part. This screw must move in the slot, preventing rotation of the small pipe.

carpentry tool

Many people quite often have to process wooden parts. This processing is usually associated with the assembly of various wooden structures or their repair. It is very inconvenient to do such work using factory devices with iron clamping jaws. And also it can lead to damage to the wooden product, the occurrence of cracks or dents. For this reason, it is better to use homemade vise for wood parts. It doesn't take much time or effort to assemble them.

To assemble a carpentry vice with your own hands, you need to find the following materials:

A bed of a similar cross design, on which metal guides are fixed, is fixed on the working surface of the bench table with the help of bolts or self-tapping screws. In the movable vice jaw and in the body you need. They are necessary for the screw and two metal guides. These through holes should be drilled simultaneously in both bars so that they are at the same level relative to each other.

Further, the guides are fixed in the body of the machine tool, and a movable sponge is put on them. It is necessary to insert a lead screw into the central through hole of two corner bars, onto which a nut is screwed from the back of the housing. On the other end of the screw, which extends beyond the front of the moving part, you must also screw and weld a lock nut. To attach a knob to the screw, it is worth drilling a through hole of the same diameter in it. Next, another nut is welded to the collar.

Such carpentry mini-vises work very simply. Rotating, the lead screw is twisted into a metal nut, which is welded to the back of the product body. Thus, the movable sponge is attracted to the fixed part. Their principle of operation is very similar to a jack.

It is unlikely that in the home workshop there will be a more necessary device than a bench vise. Even if you mainly work with wood, sometimes you will not be able to do without a vise. And if you don’t have a workshop, garage or corner in the apartment where you can repair simple household utensils, having a small bench vise can help out a lot in many situations, turning a kitchen table or even a stool into a mini-workshop.

First of all, about the appointment. The task of the vise is to securely fix and hold the part or workpiece during its processing with various tools. Depending on what objects mainly need to be fixed in a vise and what tools you have to work with them, the design parameters of the vise vary. But the most universal and most common look like this:

The basis of any vice is a screw pair. In most cases, the screw is fixed in the movable part of the vise body, and the nut is fixed in the fixed part, which is either directly or through a rotary mechanism attached to the bench or a special stand that ensures the immobility of the vice during any operations with the part fixed in them.

Types of locksmith vise

In addition to having a solid base, you need to be clear about the kind of work you will be doing and match your choice of bench vise with it. First of all, it concerns the material of the case. In the post-Soviet space, it is more often cast iron.

This material is hard, wear-resistant, but rather brittle. Therefore, if you are not going to bend thick steel blanks with a sledgehammer without serious preliminary heating, then feel free to take such a vise, and if you are going to, then it is better to look for steel ones.

If you need to regularly fasten cylindrical workpieces in such a desktop vise, then it is advisable to make an overlay for a sponge with a triangular cutout. And if such operations are quite frequent, then we advise you to consider options for the design of a locksmith vice, somewhat different from the standard ones.

In general, if we talk about the functionality of a bench vise, then first of all you should think about the size. If you know for sure that you will not have to work with large parts, then do not pay for extra metal, and perhaps even consider a compact machine vice.

Or vice versa - it is possible to work with large-sized parts, but without much effort in their processing. Then we can consider the option of a vise with the possibility of preliminary spreading of the jaws without using a lead screw.

If you do not have a workbench, and there are also more operations in the list of works that do not require the application of brute physical force to the workpieces, then the option with a desktop vise secured with various clamps is yours.

True, the latter are mini-presses, it is better to have them on the farm as additional ones. You can’t clamp large parts in them, and you won’t put serious efforts on the workpiece being processed - there is not enough clamp pressure to hold the vices themselves, but making a key to the lock according to the model is just that.

In addition, such vices are sometimes indispensable if you need to unscrew a stuck nut when you can use them as a hand tool. Despite the miniature size, the pressing of the sponges is very good.

It is also worth mentioning a small vice on a ball joint, which serve for the convenience of processing very small parts of complex configuration, allowing the processing of various surfaces of the part from one fastening.

It is clear that the clamping force of the ball joint is not enough for serious physical exertion, so such a vise is suitable for rather specific types of work. The same, in our opinion, not very serious, will be vices with fastening with a suction cup.

For their more or less reliable fastening, either a well-polished surface or glass is needed. On other surfaces, it is unlikely that they will be able to securely fix them. And their functionality is also small.

For all types of locksmith vise, you will obviously need additional pads to secure parts made of soft materials.

Some bench vices have a pneumatic drive, which greatly facilitates the process of securing the workpiece.

But if you don’t have a metalwork mini-production at home, then such a vise is unlikely to be useful to you.

What else is important to know when choosing a bench vise? There are quite a lot of complaints from users about Chinese vise with cast-iron bodies, equipped with clamps for fastening - they often break off, so if you want a cheap vise from China, then it’s better to choose from steel.

Choose a vise that, with the jaws as wide as possible, has the least play between the parts of the body. Also, if you do not need a rotary mechanism at the base of the vise for work, choose a model without it: save money and increase structural rigidity.

How to make a bench vise with your own hands

The question is: why, with such an abundance of sizes, shapes and configurations of locksmith vices offered by the distribution network, engage in their independent implementation. When making a bench vice with your own hands, you can save up to 10 times in cost, as well as make a device with the specified parameters.

And this is absolutely real, because almost everything that can be useful for making a desktop vise can be found at scrap metal collection points for mere pennies.

This is especially noticeable in the photograph, in which parts of a sanitary pipe valve with a flywheel are used as a screw pair.

You can also take a screw pair from an old vertical jack. Even if part of the thread has already worn out slightly, then, as a rule, this is a small area from the edge of the screw, which will already need to be cut to shorten it. The lead screws of old lathes, screw presses, etc. are also very durable.

At worst, for very little money, you can order a turner at the nearest vocational school such a pair with a wide nut, with a conventional metric thread. Just make the diameter bigger, and the nut wider. In this case, the clamping force is redistributed over a sufficiently large area due to the diameter of the screw and the number of turns.

As a last resort, just buy a larger stud in a hardware store, and a high nut to it, or 3 ordinary pieces, which you then weld in series, wound onto the stud.

The classic version of homemade desktop vise

From the photograph, steel parts are clearly guessed, almost always easily selected at the nearest second-hand metal:

• steel plate 200 x 200 3 - 6 mm thick (possibly thicker);
• 2 channels (120 mm - external, 100 mm - internal) with a length of 160 mm and 300 mm, respectively, in your case, the dimensions may be different depending on the length of the lead screw;
• steel ears from some large-sized container;
• 2 worn turning tools;
• a bar for a crank, in this case a piece of reinforcement;
• screw or stud corresponding to the diameter of the bar, and 2 nuts;
• 2 washers, with a diameter corresponding to the diameter of the lead screw;
• screw pair - any of those described (in this case, ordered by a turner), 335 mm long;
• strong plate for fastening the lead screw.

The lead screw is separated from the plate on both sides by washers, one of which is welded to it from the side of the threaded part, although with this diameter it can be fixed with a cotter pin or lock ring. Then this assembly will be completely collapsible, which is clearly better for reasons of maintainability.

The handle on one side is damped with a welded nut, and on the other side it is made collapsible after welding a thread from a screw of the appropriate diameter to it.

The nut from the screw pair is welded to the base plate flush with the 120th channel.

For the normal entry of the inner channel with the lead screw fixed on it, its ribs need to be slightly filed.

Ears with jaws welded to them, made of cut turning tools, must be positioned with the lead screw screwed in. So they will take the exact place. You can even twist the sponges together with soft wire, ensuring their perfect relative position.

You can also pre-cut them with an angle grinder with a metal cutting disc.

Due to this fastening of the jaws, namely the shape of the hooks and the distance between them, it is possible to fasten non-standard parts expanded to the bottom in such a vice.

And the maximum thickness of workpieces processed in this vice is very impressive. And there is no need to talk about the maintainability of such equipment - you can see for yourself.

Dear readers, if you still have questions, ask them using the form below. We will be glad to communicate with you;)

Locksmith vise is a necessary equipment in the workshop of any man, without which it is difficult to do in this or that type of work.

It is not at all necessary to place them in the garage; you can arrange a vise corner at home, for example, using a table or an ordinary stool for this.

What are locksmith vise for?

When processing or sharpening any part, it is necessary to fix it firmly and securely, that is, to keep it in a certain position. The photo of the vise shows the principle of operation of this equipment.

The parameters and dimensions of the vise are determined depending on what type of tool you need to firmly hold.

The design of the carpentry vise includes:

• chassis screw;
• handle;
• movable and fixed sponge;
• base plate.

The main types of locksmith vise

Beforehand, how to make a vise with your own hands, you need to decide on the choice of work related to them.

All types of vices are divided into two types:

• non-rotary ones have a simpler design and are easiest to make yourself. The part is fixed strictly in one position.
• swivel vices are most often adapted for drilling on a machine. During operation, it is possible to rotate the workpiece without unclenching it.

The material of the vise body is most often made of durable cast iron. It is important to know that cast iron is not intended for exposure to high temperatures; steel metal is suitable for these purposes.

If the work will be carried out with small-sized parts, you should not increase financial costs and make compact small vices.

A small vise with a ball joint base is useful on the farm for processing very small parts that can be fixed individually. These are mini-vises with suction cups, mounted on a glass or well-polished surface. But they are suitable for rare frivolous works.

Please note that it is wise to introduce soft nozzles on the fastener to work with soft parts so as not to provoke damage to them. A vise with the least backlash, with the jaws fully retracted, is ideal.

A vice without a rotary mechanism will significantly save money, unless, of course, it is useful in work.

Work on the manufacture of locksmith vise at home

Carpenter's vise, self-made at home, will significantly save the family budget at times than their store-ready "brothers". And a huge plus is that the product can be made according to personal preferences and for certain individual types of work.

It is absolutely easy to find material for construction, it can be: a part of a technical pipe, a used jack, old lathes, presses, etc.

And if you go to a metal collection point, there will undoubtedly be a suitable vise part that will cost you a penny.

Classic Homemade Vise

There are many types of vise, but the most popular and traditional is the steel material type. Such a vise will be much more reliable than bought factory-made.

The design consists of:

Note!

• a steel plate of at least 3 mm., but it can be much thicker;
• channel external and internal (120 and 100 mm.);
• steel ears;
• turning cutters 2 pieces;
• a small piece of reinforcement (rod for the gate);
• nut (2 pieces), stud or screw of a certain diameter that matches the bar;
• washer (2 pieces) of the same diameter with a lead screw;
• screw pair 335 mm;
• a thick plate is needed to secure the undercarriage of the screw.

It is necessary to separate the lead screw with washers on both sides of the plate. One of the two washers must be secured with a cotter pin or a retaining ring so that the part is completely collapsible, you must first weld the thread from the screw to it.

The handle should also be collapsible on one side, and on the reverse side it should be welded with a nut. It is necessary to weld a nut with a channel from the screws flush to the plate. In order for the channel inside with the screw to move easier on the go, it is recommended to lightly process it with a file.

Sponges are welded to the so-called ears, made of turning tools. They are placed in the right place when the lead screw is screwed in, so the ears stand at an ideal distance from each other.

But you can also link them with wire for greater convenience, so in the future it will be more convenient to fix uneven parts, the shape of which is expanded to the bottom.

Such homemade vise allows you to process larger parts.

Note!

To perform work in the home workshop, it is recommended to choose the simplest fixed vice for the machine.

It is not difficult to make them yourself, you just have to watch the video and recommendations, which can be easily found on the Internet and preliminarily correctly draw up drawings.

DIY vise photo

Note!

The presence of a vice allows you to expand the range of work, increase their efficiency. After all, securely fixed parts are easier to process, their quality is higher. Depending on the work being carried out, the characteristics of the processed objects, a vice of certain sizes and parameters is selected. These can be small models that easily fit on the kitchen table, stool and more massive for large parts. Any of them, with a little ingenuity and diligence, you can make yourself.

Features of the assembly of clamping devices

A vice is used to hold various parts in a given position, which facilitates and increases the accuracy of their processing. All of them are divided into two groups: carpentry and metalwork. The latter are primarily designed to work with soft materials: wood, plastic, etc. Machine tools are used to work with hard materials, so the clamping jaws have a lower protrusion height for ease of processing products.

When making a vice at home, you can make any changes to the design of the standard model in order to optimally adapt it to your needs. For example, for processing small parts, provide for a rotary mechanism. When planning to make a vice with your own hands, pay attention to the following nuances:

• Material. To increase the reliability and durability of the product, high-quality steel is chosen.
• Product size. If you have to process mainly small parts, then it is better to make a compact model.
• Thread pitch. The fine thread ensures efficient clamping and smooth running.
• Sponges. Their size and shape are chosen taking into account the material, type of workpieces. Flat jaws do less damage to soft materials.

Tubular vise design

Homemade clips can be made from any improvised materials. For example, the construction of metal pipes is quite simple and effective. To do this, it is necessary to select pipes in such a way that one of them fits snugly into the other. Productsmust be solid-drawn without an internal weld. The size is arbitrary, since it is selected based on the purpose of the clamping device and the characteristics of the workpieces.

The production order will be as follows:

• From the bottom of the pipe of a larger diameter, which will serve as the basis of the structure, supports are welded. On the back side there is a rear wall made of 3-5 mm thick steel sheet, with a pre-drilled hole and a welded running nut. Opposite the front support, a rear fixed jaw is welded at the top point.
• On the outer side of the movable pipe, another steel plug 3-5 mm thick is welded. To move it, a mount is made from a stud, lock nuts and thrust washers. At the protruding end of the stud, an eye is welded to insert the collar. At the top of the movable tube is attached to the front sponge.
• At the final stage, hardened steel plates with pre-cut notches are screwed onto the jaws. Their presence will increase the clamping area and ensure reliable fixation of the processed objects.

All moving parts, inner tube surface, stud threads, are lubricated with a low-fluidity grease to facilitate movement.

Similarly, clamps are made from a square or rectangular profile. Their main advantage is the longitudinal movement of the moving part in the absence of rotation, which is typical for a tubular structure.

Vise from the corners

Simple locksmith vise can be made from metal corners of any size. In addition to them, you will need the following materials and tools:

• a metal rod with a diameter of 20 mm for the manufacture of a lead screw;
• pins for guides in the amount of two units, but in a simpler design they are not used;
• bolts, nuts, washers;
• electric drill, welding machine, hammer, file, hacksaw.

The sequence of actions will be as follows:

• A lead screw is made from a rod. Since it is difficult to make a screw of the required characteristics at home, it is better to entrust this operation to specialists.
• A base is created from two longitudinal and transverse corners, in the lower part plates with ready-made holes are necessarily welded through which the machine vice will be attached to any stable surface.
• The fixed jaw is already welded and is part of the base. Therefore, having drilled a hole of the required size (equal to the diameter of the screw) in it, a nut is welded under the lead screw. The thread can be cut directly in the body of the angle, but the nut is a more reliable option..
• The movable sponge is made separately, necessarily providing for a fastening mechanism. To do this, a U-shaped plate is welded on the reverse side. At the end of the screw, a hole is drilled for the stud, which fixes the pre-inserted washer.
• On the sides of the jaws, guide pins are fastened, but their presence is not a prerequisite.

At the last stage, having fixed the finished product to the working base, the operation of all mechanisms is checked.