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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'> extropy-chat [mailto:extropy-chat-bounces@lists.extropy.org] <b>On Behalf Of </b>Anders<br><b>Sent:</b> Tuesday, August 09, 2016 3:35 PM<br><b>To:</b> extropy-chat@lists.extropy.org<br><b>Subject:</b> Re: [ExI] save the art tech<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On 2016-08-09 22:52, spike wrote:<br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> </span><o:p></o:p></p><div><div><div><div><div><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri",sans-serif'>Now we take a wood pillar, set it on the same turntable, mount surgical lasers, have them burn away the surface of the wood </span><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:windowtext'>… spike</span><o:p></o:p></p></div></div></div></div></div></blockquote><p class=MsoNormal><br><span style='color:windowtext'>>…</span>I think mechanical milling is easier than laser milling. CNC laser cutting is really mature and powerful (my brother got himself one, I am so envious). One can put the laser on a robot too, but it is still just doing 3D cutting: <a href="https://www.youtube.com/watch?v=rsubtwz6b30">https://www.youtube.com/watch?v=rsubtwz6b30</a><br>The problem is that vaporizing surface material on a macroscopic 3D object appears fairly nonlinear (especially wood!) so there will be effects on underlying material too. Still, the more that can be done solid state, the better.<br><br>Sculpture spam, anyone?<br><br><o:p></o:p></p><pre>-- <o:p></o:p></pre><pre>Dr Anders Sandberg<o:p></o:p></pre><pre><span style='color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'>If we use a turntable and go the wood route (for low cost) I am thinking of several possibilities. First stage would be done with something like an ordinary lathe. That part would be cheap and fast. To get close to the final shape, we could use a combination of horizontal and vertical spinning blades. We could get it to within about a cm of the final surface. Then we could do the next stage with Dremel tools, drills and such. Perhaps we could do vapor-deposition coating to simulate marble with a kind of hologram-ish surface.<o:p></o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'>It might be possible to use marble in a multi-stage all-abrasive automated David-maker, but wood is cheaper and easier to machine. <o:p></o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'>The original scupture is 5.2 meters. We should go for at least 7, then set a production run goal at about 20 a week for the first thousand units.<o:p></o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'>spike<o:p></o:p></span></pre><pre><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'><o:p> </o:p></span></pre></div></body></html>