![]() ![]() Hans Karlsson Klensmide AB, based in Sweden, is globally celebrated for its exceptional hand tools, combining superb design with the finest steel for unparalleled edge retention. Edge Protection: Accompanied by a Woodsmith leather sheath, constructed from durable split leather and secured with robust leather thonging.Total Weight: Approximately 700 grams, balanced for precision work.The handle is 230mm (9 inches) in length, finished with a light coating of linseed oil for durability and a natural grip. Handle: Crafted from ash or elm, sourced from the woods near Motala.Steel: The adze is forged from premium Uddeholm steel Arne SS1672, renowned for its toughness and edge retention.Cutting Edge: Approximately 50mm (2 inches), with a main external bevel and a finer internal bevel, both ground to about 25 degrees. To compare against the other HK adzes see the sweep table here.Please note due to the exclusivity of this item limits purchases to one per customer. These subtle marks are a hallmark of quality and authenticity, signifying that no two pieces are exactly alike. Arrives ready for use, sharpened and honed to a fine edge. Subtle strikes of the hammer are visible on the tool's head, a testament to its hand-forged origins. The Karlsson family's profound understanding of a craftsperson's requirements is evident in every aspect of the tool's design and execution. It's a tool that has been refined for performance, with each curve and angle tailored to the needs of woodworkers. This 50mm adze is distinct in its rounded cutting edge, diverging from the flat middle design found in larger models such as the 60mm adze. Known in Sweden as the Tjackelyxa Kort Skaft, this adze is a favourite among woodworkers for hollowing out bowls, troughs, and sculpting chair bottoms. It's a rare find, made in small batches to ensure each one meets the high standards of this world renowned Swedish forge. This would change our understanding of stone tool use by Ice Age humans, and how such technology was spread into different environments.The Hans Karlsson Adze 50mm is a bespoke tool, forged and crafted by the skilled hands at Hans Karlsson Klensmide AB. The team believes that if similar traces are found on the edges of real artifacts from Marine Isotope Stage 3 sites, this would mean that humans had honed woodworking technology from significantly earlier times than is currently believed. While fractures alone cannot tell us what they were used for, they found that combining both macroscopic and microscopic evidence can help us make reliable conclusions about whether the edges were used to fell trees. They found that impacts like those required for cutting down trees leave distinctive, macroscopic fractures on the stone friction at the micron-scale between the stone edge and wood also forms microscopic traces that may be used for diagnosis. ![]() Edges were then examined in depth for both macroscopic and microscopic traces of their history. The team then got to work using the tools for 15 different activities, including tree-felling, hide-processing, and butchering, as well as "non-use" events like carrying them around and trampling them. Though hafts have not been recovered from Japanese sites of the period, they adopted methods from Irian Jaya to attach a handle to the stone edges to create adzes, axes, and chisels. The findings are published in the Journal of Archaeological Science.Įdges were crafted and polished using knapping and grinding techniques which would have been available at the time. They took a hands-on approach, and crafted replicas of tools that might have been used in the Early Upper Paleolithic age (about 38,000–30,000 years ago). To address this, a team led by Assistant Professor Akira Iwase from Tokyo Metropolitan University has tried to establish what kinds of traces might be left on ground stone edges when they are used for different activities. The important question becomes what they were used for at such an early stage. In sites around Australia and Japan, many ground edge artifacts from Marine Isotope Stage 3 (about 60,000–30,000 years ago) have been recovered. This is underscored by the availability of tools that let people craft more and more complex wooden instruments, particularly polished stone axes.īut while developed wood-processing technology is generally believed to be associated with a way of life seen in the Neolithic age of the Holocene, starting approximately 10,000 years ago, ground stone axes have been found from periods significantly before this. While Paleolithic (early Stone Age) artifacts point to the use of wood for simple tools such as spears or throwing sticks, later Mesolithic and Neolithic artifacts reflect far more sophisticated uses, for building houses, canoes, bows, and wells. For prehistoric humans, improvements in woodworking technology were revolutionary. ![]()
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