Show all posts by user
Re: Italy, PISA - 16 years ago
Forum created. Please jump in and introduce yourself. Feel free to announce the group on the builders blog: builders.reprap.org I've included a note in the description that the forum may be useful for general Italian RepRap discussion until people request a forum for Italy. Let me know if you want me to modify that note and/or create a forum for Italy. Also, I noticed (via google) this studeby SebastienBailard - Discussioni generali - NO PROBLEMI DELLA STAMPANTE
Re: Potsdam, NY - 16 years ago
Created it. Good luck. Please hop in and introduce yourself. This thread will self-delete after a few days of inactivity.by SebastienBailard - New York, Potsdam RepRap User Group
Re: Rhode Island/ New England user group - 16 years ago
Forum created. Hop in and introduce yourself. A Rhode Islander came by our booth at the Austin Maker Faire. I'll ping him and let him know you've got a forum going.by SebastienBailard - Rhode Island / New England RUG
Re: Dunedin, New Zealand group - 16 years ago
Forum created. Hop in and introduce yourself, and feel free to put up an announcement on builders.reprap.org. Let me know if you also want a separate all-of-New Zealand forum. It's worth pinging Simon McAuliffe and Vik Olliver, since they're both kiwis. This thread will self-destruct after a day of inactivity.by SebastienBailard - New Zealand RepRap User Group
Re: Chicago, IL - 16 years ago
Forum created. You should go in and introduce yourself. Chicago has a local chapter of dorkbot: and a local robotics group: You may want to talk to them about the project and see if they are interested. Also, someone from Chicago came by our table at the Austin Maker Faire and expressed interest in a group. I've let him know about it. This thread will self-delete after a day or two of inacby SebastienBailard - Illinois, Chicago RepRap User Group
Re: Follow a Forum? - 16 years ago
You can use an RSS feed reader to follow a forum. (Google Reader is a webpage-based feed reader, so I suppose that's what you're doing.) If you are using firefox, you can use the inbuilt 'live bookmarks' to follow the forum. Click on the orange box at the right hand side of the address bar and select "Subscribe to this feed". I personally was pretty happy with Sage, an RSS feed reader whicby SebastienBailard - General
Re: User Group in Klamath Falls Oregon - 16 years ago
Created it. Good luck. Please hop in and introduce yourself. I'll delete this thread after a few days of inactivity..by SebastienBailard - Oregon, Klamath Falls RUG
Re: Virginia/MD/NC area - 16 years ago
That seems like a really large area for a local user group. I've created a North Carolina user group. If there is interest / need, we can widen it out to cover more area.by SebastienBailard - Baltimore/Wash. DC (and environs) RUG
Dedicated Mailing Lists - 16 years ago
If you want a mailing list for associated with your RUG's forum, request it here.by SebastienBailard - Administration, Announcements, Policy
Re: Turkey Roaster RepRap, almost tempting - 16 years ago
"Then there's the idea of "replicating" an organ with suspended tissue samples..." Brilliant! We could reprap haggis!by SebastienBailard - General
Re: Reprappers in Australia.. - 16 years ago
BarryGlen, I've created a Australia, Sydney RUG forum over in RepRap User Groups. here:by SebastienBailard - General
Anyone else in ottawa/gatineau planning on building a RepRap? - 16 years ago
Hello all! I'm one of the developers and I'm looking for other people in Ottawa also building RepRaps.by SebastienBailard - Canada, Ottawa-Gatineau RUG
Re: Maker Faire Austin - October 20-21, 2007 - 16 years ago
Wonderful! I'm (613) 255-0456, arriving Thursday morning for a robotic fabrication discussion. (Zach, did you get an invite to that?) Also, do you want to share our space? My maker ID# is 665 . The more the merrier.by SebastienBailard - General
Re: Maker Faire Austin - October 20-21, 2007 - 16 years ago
I will be attending. I am still tinkering on my Darwin but hope to have somthing to show.by SebastienBailard - General
Re: Powder support - 16 years ago
I don't think powder can work as a support material for plastic. At the start of a new layer, when the new thread of plastic from the extruder comes out, it needs to stick to the old layer. Since the plastic probably won't stick to the powder, it will just trail around behind the extruder and form a cobweb. Powder would probably work as a support material for slurries.by SebastienBailard - Mechanics
Re: Parts In Australia - 16 years ago
moonspud Wrote: ------------------------------------------------------- > > what do you mean by in can't self replicate yet? i > realise that it can't make everything but from all > i've read on the wiki it seems to be a functional > machine. Is it not able to print it's plastic > parts? > Well, this is sort of where we're at right now. We're not done getting it working yby SebastienBailard - General
Re: What Are the Current Problems? - 16 years ago
> I looked up PLA and it does have a smaller coefficient of expansion than most plastics do. > The only thing that works against it is that it melts at such a high temperature. So, integrating ( Exp(temp) dTemp ) from melting temp to room temp might be the same, or more than other plastics. Easy enought to determine experimentally. Regarding that kevin fellow's petty little comments, Fby SebastienBailard - Reprappers
Re: Parts In Australia - 16 years ago
Firstly, we haven't achieved self-replication yet, so you'll have to d-i-y a bit, build a repstap, or maybe buy a sherline or one of the questionable little clisby mills. I did a bit of poking around on cnczone.com looking for steppers in australia. promising discussion: also Try and (if you can find their prices.) (none in stock this time) (ships cheaply to au)by SebastienBailard - General
Re: Maker Faire Austin - October 20-21, 2007 - 17 years ago
I'm tempted, my brother lives down in Houston and it would be a good excuse to go down there.by SebastienBailard - General
Re: Pics of soldering connectors - 17 years ago
I'm fond of ImageMagick, a standard old *nix/OSX/Win toolset for processing just about every kind of 2D image. It has a gui, but I allways use the command line. ImageMagick is extremely useful for basic and not-so-basic tasks. Installation on Debian: # apt-get install imagemagick Homepage: Basics: Resizing: Usage example: (what size is it?) $ identify image_big.jpg image_big.jpg JPEG 120xby SebastienBailard - Developers
Test post - 17 years ago
This is a test to investigate whether or not the email<->forum software is working. Please do not reply. -Sebastien _______________________________________________ Developers mailing list Developers@reprap.orgby SebastienBailard - Developers
Re: Whens RepRap likely to take off? - 17 years ago
Forrest, I think Colin K. is correct. RepRap is more complicated than a software project because the "make" process involves drilling, soldering, and so on. This is much more difficult than installing and running software "configure ... make ... make install ... run", which usually does not involve problems like hunting down itermittent electrical faults or having n-1 bolts and n bolt holes. Mby SebastienBailard - General
Re: Solution to chicken-and-egg problem - I found a cheapish FDM service! - 17 years ago
For comparison, there's a guy who sells hobby cnc routers (motor-less, spindle-less, electronic-less) on ebay for USD$200-300. He's making the standard cnc-router design, and I think he's using a big CNC machine to do so, so he can make them with much less effort. I think these machines might make very good RepStraps / RepStrap kits, btw, assuming the quality is acceptable.by SebastienBailard - General
Re: Solution to chicken-and-egg problem - I found a cheapish FDM service! - 17 years ago
I'm pretty sure I can machine the plastic parts of the extruder quite cheaply, say USD$20 for a set of plastic pieces. (Following the actual CNC conversion of my mill, a task that's been awaiting completion for _some_time_now_.) Regarding hacking the files that aren't suitable for CNC, I was going to say that that's not possible, but it is, sort of: Joost has built a Darwin-clone using wood andby SebastienBailard - General
Re: Moving in the Z axis - 17 years ago
Right, but we should be able to design a bulky design made from plastic that looks like a generic desktop cnc routers but is made with lots of RepRapped parts. Such a machine should be able to do light aluminum milling. However, right now, without a cheap 3D printer/cheap 3D printer feedstock, it would be expensive to develop, because it would take a lot of plastic to make. Something to worryby SebastienBailard - General
Re: An 80/20 RepRap? - 17 years ago
What about the proxxon mills? They're small, but fairly inexpensive, and made in Europe. _Assuming_ they have enough travel to fabricate all the darwin parts. (I'm not sure about that.) Here's a CNC converted proxxon mill. As a note, proxxon makes a stand-alone compound table for USD$100. I can't tell from the picture how difficult it would be to attach stepper motors the leadscrews of it.by SebastienBailard - General
Re: Solution to chicken-and-egg problem - I found a cheapish FDM service! - 17 years ago
The extruder head parts can be made using a cnc mill, although you may need an extra long 3mm ball end mill, although I think you can avoid this if you work at it. Some of the other plastic parts of Darwin have oddly-shaped cavities with large voids and small holes which are impossible to fabricate with a cnc mill.by SebastienBailard - General
Re: Moving in the Z axis - 17 years ago
The Sherline/Bridgeport mill design, with the milling head going up and down (z axis), and the piece attatched to the x-y table, has good rigidity and low vibration, which is important in a mill you might be cutting steel with, but the x-y table takes up 4 times the space as having a head that moves in x-y. If we did that with Darwin, we'd have a (60cm+)by(60cm+) / (2ft+)by(2ft+) foot print, comby SebastienBailard - General
Re: An 80/20 RepRap? - 17 years ago
Extrudable aluminum is suitable for building a RepStrap (bootstrap 3D printer). It's more expensive than using steel rod and home-printed plastic hardware like corner connectors, which is what we're doing with Darwin, the RepRap design. It's also more expensive than making a RepStrap from wood (~<USD$200 for the mechanical parts, maybe), but may also be more convenient; so you'd be trading mby SebastienBailard - General
Re: Whens RepRap likely to take off? - 17 years ago
It will take off once we achieve self-replication - the 1.0 release. Until we have machines making machines making machines, the project doesn't seem important to most people. When we have 1-2-4-8...2^N of them out there, people will start to care, and every engineering student or hardware geek who wants one will build one. -------- Regarding taking ages to make even small objects, our depostiby SebastienBailard - General