[SATLUG] RepRap 3D printing proposed meeting in Katy Texas on Sunday December 30 (football, pizza, Linux)

Alan Lesmerises alesmerises at satx.rr.com
Thu Dec 27 21:43:39 CST 2007

If I can get away, I'll come.

Unlike many others in this group who have computer-oriented jobs, I'm an 
engineer at an Aerospace company where the capability to do rapid 
prototyping has direct application to many projects we undertake, so 
this might actually be something we could implement, especially if the 
price tag is so small.  If I can make it, expect some specific questions 
on specifications, capabilities, limits, etc.


Al Lesmerises

Stephen Gutknecht (RoundSparrow) wrote:
> Hi Ernest (and group),
> I think I tend to be a little more balanced and practical that most
> open source evangelist, so expect my response to reflect that. I only
> got interested in RepRap about two months ago but wanted to speed up
> my learning...  So, I went to NYC and hung out with Zach Smith for 10
> days (about 30 hours of that was RepRap hang out time in total, we
> both work full time on other stuff).
> Here is my personal answer:
>   -- The project is very alive as Open Source goes.  There is lots of
> activity, it has been building up over 3 years, it has all the
> earmarks of an open source project that will continue to thrive.
>   -- the project is entirely open, have seen no signs of anyone trying
> to keep things back, not publish their work, etc.  This is a true
> international project that was born out of university and into open
> source.
>   -- The technology itself has a high level of interest, but not a lot
> of people have experience with it in action.  At least not in the
> under $2500 price range [there are commercial devices that are much
> more expensive].  Still a lot of learning on exactly what kind of
> plastics (and other materials) are practical to extrude and how fast
> we can extrude them (the machine is rather slow at this point in
> development)
>   -- Cost of building the hardware side was probably around $750 on
> November 1, but by January 15 I think it will be more like $350.  The
> group has been doing bulk purchases of stepper motors, coming up with
> new designs, etc.
>   -- The software for printing things is pretty much complete, but
> really only a handful of objects have been created to print, and maybe
> only a dozen machines assembled.   I'd like to see more people
> creating objects, using 3D modeling skills.  Right now we have sample
> objects like shot glasses and a flask and parts to build the RepRap
> itself.
> >From a practical construction perspective, two more points:
>   -- The Darwin 1.0 design is rather parts intensive and requires a
> lot of plastic printed parts that present a chicken/egg problem.  The
> community is rather excited about a new CNC design that is being
> adapted to the RepRap electronics (and expanded from 2D to 3D).  In
> simple terms, there are two competing designs to consider when
> starting on construction (Darwin or McWire CNC).
>   -- The electronics side there is work on a next-generation platform
> ongoing.  So, you have to decide if you want to go with the
> "established" electronics or go with the newer (and in many ways
> simpler + better) design that is not yet official (Arduino).
> In other words, it is an exciting time to get involved!  I think in
> the next 3 months the community will go from having maybe 10 working
> machines worldwide to having 100 or more.  I personally witness dozens
> of orders being shipped out for the electronic circuit boards, etc.
> Hope that answers your question.
>   Stephen Gutknecht
>   Canyon Lake, TX
> On Dec 27, 2007 3:07 PM, Ernest De Leon <edeleonjr at gmail.com> wrote:
>> I remember hearing about this a while back, but it kind of went under the
>> radar.  How is the project coming along now?
>> Ernest
>> On Dec 27, 2007 2:58 PM, Stephen Gutknecht (RoundSparrow) <
>> Stephen at roundsparrow.com> wrote:
>>> Hi, just joined the mailing list.  My name is Stephen Gutknecht, I use
>>> Linux for business and personal and am actively working to build an
>>> open source RepRap 3D printer (extrude 3D objects with plastic and
>>> other materials).
>>> So far, I haven't found anyone else in San Antonio building a RepRap,
>>> but I there are at least a couple of people in Houston.  So I'm
>>> proposing a get together this Sunday, brining my RepRap stuff with me.
>>> I know Katy is kind of far, but I'm driving all the way from Canyon
>>> Lake... and can carpool some others if you want to meet/park
>>> somewhere..
>>> Anyway, I just spent 10 days in Brooklyn hanging out with Zach of the
>>> RepRap project and am pretty close to having my RepRap Darwin
>>> assembled and working.
>>> This is an entirely open source 3D plastic printer.  Info:
>>> http://www.reprap.org/
>>> Discussion and details on the proposed meeting are posted on this thread:
>>> http://forums.reprap.org/read.php?26,7263
>>> Meeting is NOT YET FINAL, but the more people who agree to the
>>> time/date the better.  Both Houston and Dallas play football on
>>> Sunday, and we are meeting at a pizza place. I'm buying Pizza.
>>>  Stephen Gutknecht
>>>  Canyon Lake, TX
>>> --
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