tag:blogger.com,1999:blog-5822805028291837738.post8535388084648539387..comments2023-12-09T03:51:33.158-05:00Comments on Various Consequences: Coefficient of Thermal Expansion Mismatch: Shapeways Steel-Bronze CompositeJoshua Stultshttp://www.blogger.com/profile/03506970399027046387noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-5822805028291837738.post-48944429108237500522013-10-13T21:34:42.603-04:002013-10-13T21:34:42.603-04:00Winning entry printed with DMLS in Cobalt-Chrome, ...Winning entry printed with <a href="http://www.jacobsschool.ucsd.edu/news/news_releases/release.sfe?id=1423" rel="nofollow">DMLS in Cobalt-Chrome, and test fired</a>. Other entries for the competition listed <a href="http://www.openspaceuniversity.org/#!designs2/cun6" rel="nofollow">here</a>. The first place entry noted the problems with using the shapeways material for this application and came up with an interesting solution: electroplate a copper liner on the inside of the part to increase the thermal conductivity. Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-47403016876879060472013-03-31T16:46:59.181-04:002013-03-31T16:46:59.181-04:00Here's some 3d printed parts (non rotating, no...Here's some 3d printed parts (non rotating, not sure what material) made using <a href="http://www.concept-laser.de/en/industry/aerospace/machines.html" rel="nofollow">ConceptLaser's machines</a>: <a href="http://www.parabolicarc.com/2013/03/31/3-d-printing-makes-its-mark-in-nasas-new-engine/" rel="nofollow">3-D Printing Makes Its Mark in NASA’s New Engine</a>Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-5744223010078018022013-03-13T19:31:36.274-04:002013-03-13T19:31:36.274-04:00These turbines look like the shapeways steel-bronz...These turbines look like the shapeways steel-bronze material: <a href="http://www.co2turbine.com/R744/News/Entries/2013/2/26_3D_Additive_Printing.html" rel="nofollow">Infinity Turbine: 3D Additive Printing</a>Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-19740737426729849102013-03-10T15:19:06.936-04:002013-03-10T15:19:06.936-04:00Does not engender confidence:
Question (PSFK): Is ...Does not engender confidence:<br /><b>Question (PSFK)</b>: <i>Is there any concern over 3D printing material handling the workload/heat/etc required from rockets?</i><br /><b>Answer (Darlene Damm, co-CEO DIYROCKET)</b>: <i>Shapeways, which is providing free 3D printing for the prizes, is able to now print with stainless steel, not to mention 3D printing is advancing at a very fast rate with new developments coming out every few weeks. We know of at least one example of a small 3D printed rocket engine that is going through tests, but has not been used for launch yet. We picked this technology for the competition because we feel it is on the cusp of cutting edge innovation and what is possible to create.<br /><br /> We recognize that there are a few challenges to still overcome, but know that the amount of amazing 3D printing technology now available plays into our favor. We feel that this technology has tremendous potential for driving down costs and addressing the access to space issue (high cost of transporting goods from earth to space), so by targeting it with the competition, we are hoping to dramatically speed up the R&D process. In short, we are hoping to see some exciting entries and collaborative work on the platform that will be advancing the technology, and because of the open design of the contests, ensuring that info is also shared with the 3D printing companies and others. This is also the “design” stage of the contest. While not confirmed, we hope to run additional competitions around testing the technology. We are hoping to push this technology forward with targeted efforts.</i><br /><a href="http://www.psfk.com/2013/03/3d-printing-spaceship.html" rel="nofollow">Open Source Competition Attempts to Build 3D Printed Spaceship</a><br /><br />Shapeways <b>does not</b> print stainless steel. They print some peculiar composite of steel and bronze. Might the competitors need "material properties" for the "design" stage of the contest!? Nah, don't sweat the details, we're "disrupting" things here!Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.comtag:blogger.com,1999:blog-5822805028291837738.post-11804855141288109062013-03-10T14:50:51.700-04:002013-03-10T14:50:51.700-04:00Critical comment on TechCrunch: "...all terri...Critical <a href="http://fyre.it/z3MYeo.4" rel="nofollow">comment on TechCrunch</a>: "...all terrible proofreading aside, that statement is truly laughable and reveals the complete lack of domain experience that DIY rockets has in aerospace..." <br /><br />This guy just doesn't get it. I'm sure the kid who built a fusor, the space artist, and the guy who thought a really expensive scooter would change the world know plenty about rockets. He's clearly not '<a href="http://www.openspaceuniversity.org/#!about/c136u" rel="nofollow">thought partner</a>' material...Joshua Stultshttps://www.blogger.com/profile/03506970399027046387noreply@blogger.com