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PRAKTRIK is a studio and brand focused on “practical” “tricks”.   All products are inspired by burr puzzles. We see great potential for facilitating their principles for utilitarian purposes. Their production requires no hi-tech, they can be made of natural, ecological, and healthy (harmless) materials, they are assemblable and disassemblable, they can also be fun.   Such puzzle structures are geometrical and constructivist on one hand and mystical on the other. This mystery brings some emotional quality to such designs that we consider very important nowadays. They also stimulate and require some intelligence from the user which is also very important to us.   Most of such known puzzle examples are too complicated and their parts are difficult to manufacture; as a result, new ones had to be found. During the geometrical analysis it became clear that this task was just the opposite of the one of a classical puzzle maker because the new solutions had to be as simple as possible and easy to assemble. Generally, three interlocking principles have been used: The first one is represented by structures (4x6, 5x4, 6x3 ...) that are theoretically “impossible” to be assembled at least in our tri-dimensional world. They can become reality only by leaving enough distance between the faces of the element notches and applying some pressure during assembly. These burr structures are interlocked in all directions and are independent of their orientation in space and gravity.   The second one is represented by structures (1x3, 1x2+1, 1x6, 2x3, 4x3... ) that can be put together by sliding motions. It can be sliding of the wooden pieces one after another (1x3, 1x2+1), half of them after the other half (1x6, 2x3, 4x3 ), or all of the elements together (1x3, 1x2+1, 1x6, 2x3, 4x3... ) as a coordinate-motion (slide-together) structure. Such mechanical puzzles are locked only in some directions and most of them depend on gravity in order their parts to stay together.   The third principle is represented by structures (VST, VIIC, XIIL, IXT1, VIMB....) that can be put together by moving all parts simultaneously. Such puzzles are named “coordinate motion” or “slide together”. Once assembled, the whole structure stays stable even one tries to move one or several of its parts. The stability in this case does not depend much on orientation and gravity. The name of a particular piece of furniture comes from the logic of its structure. For the “impossible” and “sliding” pieces it consists of the number of different element types multiplied by the number of elements of each type. The whole mathematical expression gives the total number of wooden parts. For “coordinate” collection the name consists of the total number of elements represented by Roman digits followed by letters representing the function - “S” for stool, “T” for table etc. Some of the principles we found appeared to be part or a step of more complicated puzzle structures (1x3, 1x2+1) and other appeared to be already known to other inventors (1x6) - Rinus Roelofs and his 6 piece slide structure (mortise-and-tenon joint). There are still numerous practical burrs waiting to be discovered and some of the wooden “knots” presented here to be used in other fields different from furniture design.   Praktrik Ltd product designer: Petar Zaharinov webmaster and manager: Delyan Spasov visual identity: poststudio photography: Martin Filkov     Facebook Google+ Twitter YouTube
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PUZZLES FOR LIVING

The title of the exhibition is a replica of the famous quote of Le Corbusier - “Machines for living in”. His vision about home embodies the rationalism of industrial society which is mainly our past. The post-industrial future; on the contrary, brings back the emotional element in architecture and design; of course, based on the technological achievements of the industrialism. Home and furnishing in this case can not be just machinery, they are objects with their individuality and contextuality, specific for every inhabitant and user. In this respect we think, with a certain sense of humor, that “puzzles” is a more adequate definition. Such structures are rational and constructivist on one hand and mystical on the other, combining the rational and emotional in one. They are also personal; for, the users must assemble them by themselves, being part of the creation process.   A good many brainteasers are put down as puzzles, starting with the purely abstract (mathematical, logical) and ending with the entirely material and spatial. What they all share is the hidden connection — sometimes outright mystical — between the pieces one starts with and the final solution. Mechanical puzzles, in which we see a huge utility potential, are an attempt at overcoming the limitations of the three-dimensional world. At first they seem impossible and difficult but later turn out to be founded on a simple principle and succumb to an astonishingly rapid assembling process. It is this type of spatial “knots” that prove inspirational for the people whose professions require practicality and realism — designers, architects, woodworkers. Unlike the task of the inventor of classical puzzles, theirs is perhaps the opposite: making the joint as simple and easy as possible without being obvious, preserving a portion of the mystery of orthodox puzzles. It is probably this mysteriousness that conveys life and warmth to these geometrical structures, making them suitable for the space of our home. The “puzzles for living” in this exhibition are two types: the put-together puzzles and the interlocking ones. The former type requires you to locate the correct place of each piece; the latter wants you to figure out the assembly method. In both, each piece matters — constructively, functionally and aesthetically.   The exhibition took place in Credo Bonum Gallery in Sofia from 12.12.2011 to 15.01.2012. It was the first product design exhibition in this art space; as a result, the way of presentation was meant to be not just the same as the one in a regular furniture showroom. The two types of puzzle principles were presented differently in the form of installation. In both cases the designs were exposed in their assembled and disassembled condition. The disassembled elements of the put-together chairs of Konstantin Achkov, where the type of joinery is relatively obvious, unlike the places of the parts, were put in a completely new context. They were arranged in a way representing totems and pagan masks making the relation between the initial parts and the final product even more mysterious. The initial elements of the “coordinate motion” and interlocking furniture of Petar Zaharinov were “flying” in the air in a configuration just ready for assembling and giving some hint and emphasizing the assembly principle and process.   The two different approaches also corresponded to the different professions of the authors. Petar Zaharinov is an architect, Konstantin Achkov  is a sculptor.   Konstantin Achkov took part in the exhibition with several chairs Android-system, Fangs, Frame, Ko-Ko, Stack. Petar Zaharinov presented coffee table 1x3, chair VIC and stool/table VST.     Photography: Tihomir Rachev, Martin Filkov 
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