omi

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56 discussions

Re: [omi] Conversation Today [Was: Design rant & Wut should we do]

by corey.scher

Beautiful framework! See yall tonight. -corey scher 510.387-2010 Please excuse the typos from my mobile device. -------- Original message -------- From: "Morten H. D. Fuglsang" <vallebo(a)gmail.com> Date: 04/25/2013 10:18 AM (GMT-07:00) To: omi(a)lists.sudoroom.org Subject: [omi] Conversation Today [Was: Design rant & Wut should we do] Hi all, To follow up on these weeks conversations on this list, we are meeting today at 7pm @ sudo room. Not everyone is able to be … [View More]present today, which is fine - this is an ongoing conversation, and I am happy to take responsibility that everyone is and feels included, and that it is documented and fed forward. Suggested framing for the conversation: Quickfire, "Why are you part of OMI?" What are the current needs of ourselves, the communities around us, and the world, in terms of technology and in relation to basic needs (~energy/water/food/housing/exploration & manufacturing)? What open technologies do we believe are important to develop (and/or manufacture) to help solve these needs? What role do we want OMI as an organization to play in this? (~why does OMI exist) Which open technologies etc. are each of us inspired to develop and build, right now? What are the overlaps in relation to the needs we see? Which are low hanging fruit in terms of demand on our resources and level of impact? ~Decisions. How do we want to work (together) in OMI? Infrastructure, access, space Methodology/process Documentation Actionplanning Short-term timeline. Work groups, workflow. Documentation strategy. Practical in relation to space (set up, paying of electricity bill, ...) Etc. See some of you tonight! :) M ===== Ps. Some of my thoughts on exiting things to develop * Lots of people are going into small-scale urban agriculture, and some even want to scale more (ie. occupy the farm) ** Rainwater/Grey water systems to feed into these while solving sewage issues would be interesting to work with. ** There are to my knowledge no open rototillers (except for OSE's, but its a mod for the tractor, so a bigger more complex piece). I think both could be interesting too. * We all use gas for heating our water here in east bay (most of us anyway). Totally unnecessary with all the sun in CA! Thermal solar panels are easy to build. Hooking up to old/used insulated tanks, and using a little pump/making the system passive by placing tank above, is very doable. Potentially portable too. There is significant documentation on this online already. * Portable windmills. Documentation online seems to be spread out, but it should be possibly to pool together resources and create some kickass simply ones and improving documentation. [View Less]

12 years, 3 months

Conversation Today [Was: Design rant & Wut should we do]

by Morten H. D. Fuglsang

Hi all, To follow up on these weeks conversations on this list, we are meeting today at 7pm @ sudo room. Not everyone is able to be present today, which is fine - this is an ongoing conversation, and I am happy to take responsibility that everyone is and feels included, and that it is documented and fed forward. Suggested framing for the conversation: - Quickfire, "Why are you part of OMI?" - What are the current needs of ourselves, the communities around us, and the world, in terms … [View More]

12 years, 3 months

Re: [omi] omi Digest, Vol 3, Issue 1

by Nathan Kandus

Hello! I am an artist recently moved to Oakland with several fun projects on hand, including a piece for Burning Man. I've been going around to various workshops and hacker spaces to meet other artists and to look for a space to work. Several people have recommended your place as a wonderful haven of madness. What is the best way to meet with y'all? Can I just show up and walk around? Is there meetings I could come to? Happy Creating, Nathan www.nathankandus.com My Burn project: http://www.… [View More]

12 years, 3 months

Test

by corey.scher

Just checking to see if this message goes through. Greetings! -corey scher 510.387-2010 Please excuse the typos from my mobile device.

12 years, 3 months

Bay Area Engine Modelers' Club meeting on Saturday 10AM

by Anthony Di Franco

I'm going to go by and plug sudo room and OMI and see if any people with engine-making expertise want to get rapid and open-source with their craft, and solicit help for an idea I want to pursue. Anyone want to join? Heading to OMI afterwards. Chabot College <http://www.chabotcollege.edu/about/CampusMap.asp> Bldg 1500. 25555 Hesperian Blvd Hayward, CA 94545 Telephone 510-723-6600

12 years, 3 months

Re: [omi] omi Digest, Vol 3, Issue 8

by Jehan Tremback

Windmills. On Thu, Apr 18, 2013 at 1:32 PM, <omi-request(a)lists.sudoroom.org> wrote: > Send omi mailing list submissions to > omi(a)lists.sudoroom.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.sudoroom.org/listinfo/omi > or, via email, send a message with subject or body 'help' to > omi-request(a)lists.sudoroom.org > > You can reach the person managing the list at > omi-owner(a)lists.… [View More]sudoroom.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of omi digest..." > > > Today's Topics: > > 1. Re: hydraulics (Morten H. D. Fuglsang) > 2. Re: hydraulics (Morten H. D. Fuglsang) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 18 Apr 2013 13:28:30 -0700 > From: "Morten H. D. Fuglsang" <vallebo(a)gmail.com> > To: di.franco(a)aya.yale.edu > Cc: "omi(a)lists.sudoroom.org" <omi(a)lists.sudoroom.org> > Subject: Re: [omi] hydraulics > Message-ID: > < > CALbJKfO9byjnqWcvOH-dTpQOr+tSpxp5mpH7goXaCvuRwozXLA(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Hol, awesome! We definitely need more expertise in the area of hydraulics. > And good links too, thanks to both of ye. > > I was lurking the OSE forums a bit the other day. I found something that > scared me a bit: > > http://forum.opensourceecology.org/discussion/1004/why-is-ose-so-quiet-late… > Some quotes: > > *Yoonseo, OSE team* > *Just want to clear things up with the facts about what's happening with > OSE. First and foremost, everyone on-site left OSE after the huge conflict > year-end 2012 between the team and Marcin.* > * > * > > * > Brianna, OSE team > * > > * > Lies about the quality of the products. The brick press produced shit for > bricks. They didn't have one flat surface on them. I personally built 4 of > these, which were all shipped out without proper testing. One was shipped > out a year after it was supposed to be. The power cube worked for a week AT > THE LONGEST > > * > > * > Ryan, random dude. > * > > * > I have a collective of makers that just received a space grant in upstate > NY that are making a list of first projects to focus on, and the OSE > Liberator and CEB press are near the top of the list. Hearing that the > Powercube design doesn't hold up to use and the CEB press being almost > useless scare the heck out of us though. Does anyone on here know who > purchased these preorders, or anyone that is using actively any iterations > of these pieces? I'd love to hear about their experiences. > > * > > * > Yoonseo, OSE team: > Hey Ryan, it's actually not so bad. OSE has been doing subpar builds > primarily due to haste and lack of care from Marcin, but the general > mechanisms (at least for the ceb press and powercube) are sound- we > couldn't have done the hablab/workshop without it. To be clear- the CEB > Press and Powercube work. Now the only issue is that you have to use good > materials and produce them properly (instead of the bad stuff that broke on > us over and over). > > The inexpensive surplus engines for the Powercube have frequently caused > problems due to breaking magnetos; a bunch of the solenoids broke too. > Shoddy commercial parts! So on the powercube side, as long as you get > engines with reliable accessories, and long-life solenoids, everything > should be fine. Remember to seal the threaded hydraulic connections and > tighten sufficiently- hydraulic leaks are bad! Also, I think the most > difficult part of the powercube production for you will be sealing and > installing the ports on the gasoline and hydraulic fluid reservoirs. Make > sure you get this done right else you'll get gas/hyd fluid leaks all over > the place. When I was at FeF there's mostly been problems with hydraulic > fluid leaking due to improperly sealed connections. No explosions though, > heh. > > Now the CEB Press can easily have issues surrounding its compression > chamber. If you do not use thick enough steel and insufficiently reinforce > the compression walls, you will get bending and that will get you curved > bricks. No good. Also the second thing was that the ejection surface must > be parallel or subsequent surfaces must be scaled in the proper direction. > Otherwise you will get the bottom of your bricks sliced by about 1/4" as it > gets ejected. Also make sure that the primary cylinder is high enough so > that the pressing surface can actually get to the ejection surface > (otherwise you gonna get some more bottom-slicing action). I think those > were the major issues. Make sure you put a pressure relief valve on there > eh. > > Hope that helps! -Yoonseo > > * > > > My conclusions: > * I predict OSE wont last much longer, and will ta some point stop being > the center of a lot of this open hardware infrastructure stuff. Groups will > fork it and improve upon the designs. > * hence thre is no need for us to associate ourselves closely with and > limit ourselves by, OSE. In terms of how we build and what we build. > Instead, it makes more sense for me to think of us as forking OSE. > * The CEB press can work if we use common sense and confirm the design and > do it very properly. If not, it wont work as well. We should not trust the > OSE plans and recommendations too much. > > > > > Make a great day, > Morten H. D. Fuglsang > US: +1 415 799 6931 // skype: FlyvendeHest > > > On Thu, Apr 18, 2013 at 11:35 AM, Anthony Di Franco <di.franco(a)gmail.com > >wrote: > > > See also > https://www.surpluscenter.com/hydraulic.asp?catname=hydraulicfor all your > cheapness in hydraulics needs. > > > > > > On Thu, Apr 18, 2013 at 11:32 AM, Hol Gaskill <hol(a)gaskill.com> wrote: > > > >> Hi Folks, > >> > >> I haven't been around much for fabrication of the frame and probably > >> won't be there on saturday build days at least until mid june, but I > would > >> like to help with the implementation of the hydraulics system. All the > >> designs I've seen are centered around the powercube which is powered by > a > >> briggs and stratton engine. For simplicity and flexibility, I propose > >> using an electric pump either 12VDC or 120VAC, or a standard mount and > >> coupler so we could swap them out. It could still be powered by a > >> generator for remote applications, or ideally from solar/batteries. I > just > >> see the OSE powercube as being a little more complex than we might > prefer > >> moving forward, and we can still get the same force even if we go to a > >> lower power pump, the machine would just operate more slowly. > >> > >> > >> power unit: > >> > >> > http://www.zorotools.com/g/00034368/k-G0711252?utm_source=google_shopping&u… > >> > >> valve example (just a cheap one...not researched) > >> http://www.coastpneumatics.com/valve-3quarter.html > >> > >> does anyone know the force/pressure we need for the rams? > >> > >> Cheers, > >> hol > >> _______________________________________________ > >> omi mailing list > >> omi(a)lists.sudoroom.org > >> http://lists.sudoroom.org/listinfo/omi > >> > > > > > > _______________________________________________ > > omi mailing list > > omi(a)lists.sudoroom.org > > http://lists.sudoroom.org/listinfo/omi > > > > > [View Less]

12 years, 3 months

Timbrel Valuting - Compressed Brick building

by Tom Fitzpatrick

Found some good info about building multi-story buildings with compressed bricks. The rest of the site is great as well. Check out its analogue: http://www.lowtechmagazine.com http://www.notechmagazine.com/2011/12/sustainable-urban-dwelling-unit-sudu.…

12 years, 3 months

melting and casting metal: please gather microwave ovens

by Anthony Di Franco

Finding that my current induction heater is a little underpowered and hard to tune for my envisioned in-situ melting application, I am looking into higher-power options for induction heating that fit within a similar budget and will probably be moving to ridiculously high power audio amplifiers produced for the truck sound system loudness competition market. That will be somewhat complex and time-consuming because I must also make a very high current 12V power supply to use one of those. … [View More]

12 years, 3 months

Fwd: Open mechanics tomorrow

by corey.scher

-------- Original message -------- From: "corey.scher" <corey.scher(a)riseup.net> Date: 04/12/2013 9:50 AM (GMT-07:00) To: omi(a)lists.sudoroom.org Subject: Open mechanics tomorrow Hello folks - Yesterday erik and I connected with a fellow named chris, who spent six months at open source ecology working on some of the cad designs that we are using. He will be at the warehouse tomorrow to answer questions about the designs. Happy weekend. -corey scher 510.387-2010 Please … [View More]

12 years, 3 months

Open mechanics tomorrow

by corey.scher

Hello folks - Yesterday erik and I connected with a fellow named chris, who spent six months at open source ecology working on the cad designs that we are using. He will be at the warehouse tomorrow to answer questions anyone about the designs. Happy weekend. -corey scher 510.387-2010 Please excuse the typos from my mobile device.

12 years, 3 months

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