<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">But then if we need off-planet resources we need a way to extract them. Which means putting stuff up there. Spiderfab seems a good way of bootstrapping that process, rather than an end unto itself<div><br><div><div>On 28 Sep, 2012, at 8:09 AM, Jerry Isdale wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">The first problem I have with SpiderFab is that they start off planning to loft the raw materials for printing from the bottom of this big gravity well.<div>That might be ok for the first few bootstrap launches, but we really really need to use off-planet resources to build the off-planet structures.</div><div><br></div><div>Otherwise the idea of printing the structures is great.</div><div>Zero (or micro) Gravity does make it harder to control the materials.</div><div>Even squeezing out material in an extrusion process would induce motions.</div><div>Spreading out layers of powder? ha.</div><div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Jerry Isdale<br><a href="http://MauiMakers.com/">http://MauiMakers.com</a></div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><a href="http://www.mauimakers.com/blog/thursday-public-meeting/">http://www.mauimakers.com/blog/thursday-public-meeting/</a></div></span></div></span></span>
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<br><div><div>On Sep 27, 2012, at 1:50 PM, cole santos wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><p>This is amzaing. Replicating this in even rudementry ways would be a great gambit project. </p><p>You could use this to make a framework for a oneill habitat then drape with flexible silicone heaters and pump it full of diborane and nickel carbonyl until the cvd process builds up enough wall to allow pressurization.</p>
<div class="gmail_quote">On Sep 27, 2012 1:21 PM, "Alex" <<a href="mailto:alexcg@gmail.com">alexcg@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; position: static; z-index: auto; ">
<div bgcolor="#FFFFFF"><div></div><div>In orbit 3D printing concept. Pretty awesome. Reduces costs, increases scale of what we put up there</div><div><br><strong>SpiderFab: Process for On-Orbit Construction of Kilometer-Scale Apertures</strong><br>
<a href="http://www.nasa.gov/offices/oct/early_stage_innovation/niac/2012_phase_I_fellows_hoyt_spiderfab.html" target="_blank">http://www.nasa.gov/offices/oct/early_stage_innovation/niac/2012_phase_I_fellows_hoyt_spiderfab.html</a><br></div></div></blockquote></div></blockquote></div><br></div></div>_______________________________________________<br>SpaceProgram mailing list<br><a href="mailto:SpaceProgram@lists.hackerspaces.org">SpaceProgram@lists.hackerspaces.org</a><br>http://lists.hackerspaces.org/mailman/listinfo/spaceprogram<br></blockquote></div><br></div></body></html>