Belt tensioner Wolfcraft barcode 4006885368101 (WOLFKRAFT)
Bestseller!
Description:
Frame tensioner with practical one-hand operation - leaving the other hand free for alignment!
for gluing wooden boxes, making and repairing chairs, chests of drawers and other pieces of furniture.
Description:
with automatically rolling belt for fast pre-tensioning
The ratchet mechanism allows for step-by-step clamping - from delicate to powerful
secure holding of elements to be clamped thanks to elastic clamping jaws
ergonomic 2-component handle
4 belt tensioner clamping jaws ensure precise and reliable fixation rectangular connections
belt length 5 m
packaging: double blister
5 year warranty
Production W olfcraft GmbH (Germany).
Wolfcraft (Wolfcraft) - a popular European brand hand tools in the DIY segment. For more than 60 years, the manufacturer has specialized in producing easy-to-use devices, many of which have become innovative. Production technologies are being improved and adapted to modern requirements. Wolfcraft in produces Workbenches (easy to transport, convenient to use), Clamping devices (have a well-thought-out design and securely fasten parts), Construction knives(sharply sharpened and have comfortable handles). Todayare produced at two factories - in Germany and Slovakia.
Product distortions will be eliminated thanks to the correct working methods and devices.
You only have a few minutes to assemble the project pieces, line up the edges, and tighten the clamps. By the way, are you sure that all the angles are right? Using the right tools and accessories, as well as some useful tips, you will be able to achieve every time perfect results without unnecessary fuss.
Assembly accuracy depends on the squareness of the parts, so before you start processing parts, make sure that your equipment (saw, planer, planer and other machines) is set up correctly. Then prepare a flat and clean surface for assembly. work surface. For successful work Learn one or more proven techniques to help avoid misalignment.
One part aligns with another
Dry assemble the box and rock it from side to side to make sure the bottom is inserted into the tongues to ensure a square assembly.
If all the parts in your project originally had right angles, they will align with each other when assembled, provided that the clamps are installed correctly. As shown in top photo, The hangers of the crossbars, cut exactly at right angles, automatically level the frame. The trick is to direct the compression force of the clamps perpendicular to the edges of the parts. If the clamp is placed at an angle, the pressure may cause it to become distorted.
Another way to make the assembly self-leveling is with a plywood bottom or back wall must fit snugly into tongues or grooves to maintain the squareness of the drawer or body (photo A).
Do you need gaps around the bottom or panels to compensate for seasonal humidity fluctuations?
To assemble a box with a bottom, insert the assembly template into it and secure it with clamps. The pressure of the clamps is distributed by pressure bars installed next to the connections, and not on top of them.
Make a simple assembly template that fits snugly into the drawer opening (photo B), and make cutouts on its corners so that it does not stick to the parts.
When assembling drawers where straight tenons protrude slightly at the corners, use spacers or pressure blocks as shown in (photo B), so that the jaws of the clamps do not touch the joints. This method is also useful when assembling dovetail joints.
According to the template
For precise alignment and fixation simple connections butt joint it is convenient to use a metal mounting square (photo C), which holds the parts at right angles to each other and prevents them from moving. If you prefer homemade devices, make your own mounting brackets of any size (photoD). Quick tip! No mounting brackets? There is a way to ensure that the parts of a butt joint remain stationary when gluing. Apply glue to the end of one piece first, then press both pieces together, rubbing them together to distribute the glue. Separate them for 10-15 seconds, let the glue dry a little and become more viscous and sticky, and then rub the parts together again. Increasing the viscosity of the glue will help avoid shifting of parts when installing clamps.
This mounting bracket, thanks to its rounded outer corner fits tightly to both parts being glued.
When determining the dimensions of a homemade mounting square, make cutouts in it that match the jaws of the clamps you have.
Other homemade leveling devices are clamping bars or strips of arbitrary sizes with cutouts that hold parts in the desired position and at the same time distribute the pressure of the clamps (photo E). Prism bars with V-shaped grooves will help to tighten the parts tightly corner connections on the mustache
Cutouts in the clamping bars prevent the parts from shifting, and prism bars, tightened diagonally with clamps, compress the parts together.
The steel band of this clamp distributes pressure to all four corners, tightly tightening the joints of the jammed parts.
Some clamping fixtures Thanks to the design features, they help ensure the squareness of the gluing. For example, a band clamp with four corner blocks (photoF) and four-way screw clamp for frame assembly (photoG) Allows you to align all four corners at the same time.
Four-way screw clamps, commonly used for gluing frames, can be used in pairs to assemble drawers. Metal corner parts help achieve rectangularity.
Compare the lengths of diagonals without measuring them with a tape measure
Even without a square that you can trust, you can check the squareness of the assembly by comparing the distances between opposite corners. If the diagonals are equal (and the opposite pieces are also the same length), you can be sure that all the angles are right. If clamps interfere with measurements using a tape measure, or if you are gluing several identical products, try a different method. Cut two thin slats from the scraps. The length of each of them should be more than half the length of the diagonals. Then cut one end of each strip at an angle of about 30°. Pressing the bevels to the opposite internal corners assembly, fold the slats together and fasten them with a clamp. Then use the same straightening rod to measure the other diagonal to ensure the assembly is square. To correct the distortion, use a long clamp to carefully tighten opposite corners along a longer diagonal.
This device allows you to securely fix wooden blocks after applying glue.
To make a clamp I needed:
- 10 mm plywood,
- M10 studs and 1 meter long,
- wing nuts,
- washers,
- glue "Moment-joiner".
Making a clamp
First I made four corners from plywood. I cut out 12 squares measuring 100 x 100 mm. I made a cut of 60 X 60 mm for eight squares, and then glued three pieces together, 2 sawn to one piece.
Then I drilled two holes in each corner:
The first through with a diameter of 10 mm. To prevent the drill from moving to the side when drilling, drill from both sides.
The second is blind at 60 mm with a diameter of 8.5 mm. I made a thread in it with an M10 tap, and then screwed in a pin with glue. It turned out that in each corner one pin goes right through, and the second is tightly fixed.
Making a clamp for gluing photo frames with your own hands.
Initially, I wanted to saw off the studs, since the design turned out to be cumbersome, but then I decided to leave it in case I needed to make a frame measuring meter X meter.
Testing and modification of the clamp
Tests have shown that the frames stick together normally, but there is one drawback: When dry, excess glue remains at the bottom of the corners. Therefore, the frames were skewed. To eliminate this drawback, I made holes on the bottom side of each corner using a Forstner drill to remove the remaining glue.
Modification of a clamp for gluing photo frames using a Forstner drill.
As a result, I eliminated the distortion of the frames, and the results were good.
Conventional screw clamps have a disadvantage: when clamping parts, you need to spend a lot of time unscrewing and tightening the screw. Therefore, high-speed clamps were created. Clamp in Fig. 295, and consists of a guide ruler 1, rigidly fastened to the base 2 and the movable part 3. The screw 4 compresses the assembled parts, while the movable part 3 is held in the desired position by the friction that occurs during the compression process. In the free state, the movable part easily moves along ruler 1.
The clamp shown in Fig. 295, b, consists of a bracket 4, a movable rack 2 with a screw 1 and a locking pawl 3. The stroke of the movable rack 2 is 77 mm. Screw 1 moves 33 mm, the total travel stroke is 110 mm. Rapid movement of the rack with the screw upwards is carried out after disengaging the pawl from the rack by pressing the pawl lever towards rack 2. Moving the rack 2 down is possible without pressing the pawl lever 3; in this case, the clicking of the pawl on the rack can be heard. When clamping, rail 2 is sent to the parts being fastened; final compression is performed by screw 1; pawl 3 stops the rack, preventing it from moving upward.
Clamp for gluing panels, frames, doors and other products shown in Fig. 295, v. Due to the large size of the parts to be glued, two clamps are used and they are installed side by side. The movable jaw 3 with pin 2, located on the trestles 1, is pre-installed to the required size of the pressed panels. The final compression is performed by screw 4 with handle 5.
To hold the assembled window frame or door leaf in a vertical position, special clamp stands are used.
Antrushin clamp stand(Fig. 296, a) consists of two hinged parts, between which there is a hole (socket) 60 mm wide, equal to the thickness of the window frame bars or door leaf. Under the weight of the window frame or door leaf, the stand in the middle bends and tightly clamps the product. If the product is not held tightly in the nest, that is, there are gaps between the product and the walls of the nest, then pieces of plywood are inserted into the gaps.
Rice. 296. Stands-clamps: a - Antrushina, b - Kibasova
Rice. 297. Metal clamps for shields
In Fig. 296, b shown stand-clamp Kibasov. Its main part is a stand with a groove. At the bottom, the stand with the stand is fastened with a hinge and can take the desired inclined position, fixed using an adjustable strut. The product is inserted with one side into the groove and clamped with a wedge.
Devices for compressing plots glued into panels are shown in Fig. 297. Compression beds should be level and smooth, and the stops should be perpendicular to the beds. To distribute pressure more evenly, auxiliary bars are applied to the edges of the shield.
To simultaneously hold together several shields, a device called a clamp is used. It consists of four massive beams connected vertically into a rectangular frame. When joining panels from more or less long plots, two or three clamps are used. A massive wooden slab, planed to resemble a ruler, is laid on the lower horizontal beams of the clamps. The shield assembled for rallying is laid on the slab and wedged between the hose racks.
muta. Transverse grooved gaskets of equal thickness are placed on the shield and a second one is placed on them assembled shield and it is also jammed. In this way, the entire opening of the clamp is filled with bonded shields. It is necessary to especially monitor the compression of the lower shields so that when driving in the middle wedges, the lower ones do not weaken.
Having filled the clamp to the top with shields, compress it in the vertical direction,
driving wedges between the gasket placed on the upper shield and the upper beam of the clamp. This prevents bulging and warping of the shields.
At woodworking enterprises, when gluing panels in bulk, a fan-shaped band of a simplified design is used (Fig. 298).
To protect the glued boards from bulging, they are pressed on top with strips. In one turn the vima makes it possible to glue twelve shields together. During the time required for a full turn of the strap, the glue has time to set, and the shields can be removed from the strap. In addition to the six-section clamps, twelve- and twenty-four-section clamps of the same principle of operation are used.
At large mechanized woodworking enterprises, boards are assembled in gluing-conveyor wedges and panel stitching machines.
Clamps are an indispensable assistant every carpenter. It is difficult to imagine a master who is able to do his work without these devices. There are quite a few types of clamps and clamps, and manufacturers never cease to look for new solutions to make their tools even more convenient, functional and adapted to specific carpentry tasks.
In our material we will talk in detail about the main types of wood clamps: we will tell you what they are made of and how they work various models clamps, consider the advantages and disadvantages of each of them, give useful tips, how to choose a clamp for specific carpentry tasks.
G-clamps
Design Features. G-shaped clamps, also often called C-shaped, are the most versatile and widespread type of carpentry clamps. The basis of the design is a cast or forged bracket with a movable clamping screw.
Advantages. L-shaped clamps are lightweight, easy to use, provide high clamping force, and have no backlash in the jaws.
Flaws. Suitable for joining workpieces of small thickness.
Scope of application. G-shaped clamps are used in cases where it is necessary to apply the same compression force to surfaces that are parallel to each other. In carpentry, C-clamps are used primarily when gluing wood.
F-clamps
Design Features. The clamp consists of a guide rail on which movable and fixed jaws are fixed. The movable clamp, sliding along the guide, has a set screw that allows you to adjust the desired grip length and prevents the clamp from loosening. The jaws are equipped with pads to protect the fixed surfaces.
Advantages. The main advantage of F-shaped clamps is their versatility. The adjustable grip length makes it possible to firmly and firmly fix workpieces of various thicknesses.
Flaws. It is not always convenient to work with an F-shaped clamp, because... To manipulate the tool you have to use both hands.
Scope of application. Used for fixation wooden products and blanks of various thicknesses.
End clamps
Design Features. The end clamp consists of a cast or forged base-bracket with three clamping screws.
Advantages. A simple and affordable design for solving specific carpentry tasks: a clamp with a T-shaped profile is used to clamp edges and ends.
Flaws. Despite all its functionality, managing an end clamp is not so easy: fixing an edge, simultaneously holding a clamp and tightening three clamps is not always convenient alone.
Scope of application. Clamping of edges and end elements of wooden products.
Angle clamps
Design Features. Clamps for corner joints can have the most different versions. A typical design consists of a body, one or two screw clamps with clamping heels.
Advantages. A simple and compact device for fixing workpieces at right angles. Such clamps often complement special holes for fastening to a workbench.
Flaws. Limited Features when working with large wooden elements.
Scope of application. Clamps for gluing and fixing wood at right angles. Creating miter connections.
Quick-release (automatic) clamps
Design Features. The typical design of a quick-release clamp consists of a metal tire and two plastic jaws (movable and fixed). The moving part is pressed using a special lever mechanism. The lightweight and durable body of quick-release clamps is made of plastic composites fiberglass reinforced. This allows automatic clamping to be used in almost any environment.
Advantages. One-handed options are perhaps the most convenient and ergonomic type of clamps. How to use such clamps is intuitive: all manipulations are performed with one hand, while the other holds the part. Even the smallest quick-release clamps have enormous clamping force.
Most lever models have a transformable design that expands the capabilities of the tool. For example, on some models you can turn the jaws in opposite directions to work sideways, which is very convenient when disassembling tenon joints. Two quick clamps can be easily rearranged into one long one by interlocking the protrusions on the fixed jaws.
Flaws. High-quality automatic clamps are quite expensive, and almost all budget analogues are not highly reliable.
Scope of application. Quick-release clamps are used for all types of carpentry work: from fixing small parts to gluing large panels.
Spring clamps
Design features. Clamps with unregulated clamping force, working on the principle of clothespins. A popular variation of the classic spring clamp are designs with variable clamping width.
Advantages. The clamps are lightweight and convenient; all manipulations when working with them are performed with one hand. They provide a stable, powerful clamping force. Optimal for delicate fixation of glued parts.
Flaws. Small grip depth.
Scope of application. Universal device for gluing and fixing oversized parts.
Band clamps
Design Features. The band clamp consists of a durable synthetic band and a tension block. The package usually includes plastic elements for adjusting corners.
Advantages. Provides gentle clamping of corners and curves without distortions, which is very important at the gluing stage. Allows you to work with products of any size: from small frames to large cabinets. The use of plastic corner elements ensures uniform pressure when gluing corners and miter joints.
Scope of application. Selection of clamps belt type – best option for complex carpentry tasks: clamping rounds large diameter, fixing polygonal joints, etc.
Pipe clamps
