![]() ![]() Researching how and why wood cracks and splits as it dries is easy. One more thing: Folks been working wood for many thousands of years. My 2” purpleheart board will never warp, too damn dense, but my 2” Keyaki board (30-40 years old) has two interesting cracks, either could explode at any moment. But there are a couple of folding boards in the club here in Boise ID that are slightly warped. Most of the commonly available wooden boards that under 1” thick are usually stable because the lumber has been thoroughly seasoned or dried. We once enjoyed a wide selection of composite and plywood go boards but, Unfortunately, all of the better go equipment retailers in the States are gone. I’m not a fan but they are inexpensive and stable. Bamboo boards are about 50% resin and are super stable in any environment but they are hard and slick and heavy. A traditional, single chunk floor board is a waste of money for your situation. ![]() ![]() Eventually, internal tension builds to a point where something is going to give and it’s rarely predictable. It’s impossible to stop wood from moving at the microscopic level as moisture migrates. CNC and laser engraver eps files are available from several locations. You can draw, paint, etch, burn, engrave, or silkscreen the lines and hoshi points. Your research starts over on lifein19x19 forums and sensei’s library. Getting the lines drawn on your board is the tricky part. My favorite custom board is made of purpleheart (Peltogyne), an unusually dense and lovely pigmented wood from Central America. But I’ve played on some intensely flamed grain and had no complaints. Maple and cedars are popular but oaks aren’t used much because of the grain contrast. Many folks like a hard surface that will not pit while others enjoy watching their board gain dozens of marks from thousands of enthusiastically placed stones. Any wood can be used but choose a color and grain pattern you like. There will be woodworkers in your area who can assemble a go board quickly and easily from several machined pieces, also known as sticks, simply glued up or laminated or joined with a more complicated joinery system like biscuits. The size specs are readily available online. © 2020 This manuscript version is made available under the CC-BY-NC-ND 4.I second the recommendation to have a board built locally. #GOBAN ONLINE LICENSE#Item Type:Īvailable under License - Creative Commons Attribution Non-commercial No Derivatives. Plate reconstruction of the Goban Spur and its possible conjugate – the Flemish Cap, shows asymmetry in the crustal architectures, likely due to rift evolution involving more 3-D complexity than can be explained by simple 2-D extensional kinematics. Magmatic events occur coincident with each rifting stage, and the volume of magmatic accretions increases from NW to SE, more than previously interpreted. Above the top basement in the exhumed domain, the syn-exhumed sediments show strikingly weak reflectivity, rarely seen at other magma-poor margins. The transitional zone between oceanic crust and stretched continental crust consists of both shallow peridotite ridges and deeper exhumed serpentinized mantle, much like the conjugate Iberian and Newfoundland margins. The geometries of each crustal domain are variable along the margin strike, probably suggestive of different extension rates during the evolution of the margin or inherited variations in crustal composition and rheology. These seismic profiles reveal significant along-strike structural variations along the Goban Spur margin, and allow us to delimit five distinct crustal zones related to different rifting stages and their regional extents. Here, six newly acquired multi-channel seismic reflection lines are processed and interpreted, along with vintage seismic profiles, to characterize its structure and evolution. The crustal architecture of the margin is complicated due to its multi-staged tectonic history. However, the along-strike extent of this serpentinized zone has, until now, been unknown due to insufficient data coverage. Published studies demonstrated that a 70-km-wide zone of exhumed serpentinized mantle lies between oceanic crust and stretched continental crust at the seaward limit of Goban Spur. The Goban Spur, offshore Ireland, is a magma-poor rifted continental margin conjugate to the well-studied Newfoundland margin, offshore Canada. ![]()
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