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Sam the Giant  
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 More options Jun 25 2011, 2:36 pm
From: Sam the Giant <samthegi...@gmail.com>
Date: Sat, 25 Jun 2011 11:36:30 -0700 (PDT)
Local: Sat, Jun 25 2011 2:36 pm
Subject: 3D printers

Oddly enough after our discussion last night I happened to notice in my
Twitter stream an article<http://fabbaloo.com/blog/2011/6/24/the-botmill-axis-plus-assembled-3d...>on Fabbaloo about the BotMill
Axis PLUS <http://botmill.com/index.php/3d-printers/axis-3d-printer.html>.  
For $1,195.00 you get:
**

*the first ikea-like 3D printer kit that anyone has offered. Essentially we
are doing all the assemblies and letting the client put up the frame. This
printer is on sale for under $1200. It's the best thing on the market right
now with a new interchange-able 3mm and 1.75mm nozzle included as well as
aluminum heated bed.*

 Could be worth looking at to get us past the bootstrap phase....

- samthegiant -


 
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Sam the Giant  
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 More options Jun 25 2011, 2:41 pm
From: Sam the Giant <samthegi...@gmail.com>
Date: Sat, 25 Jun 2011 11:41:52 -0700 (PDT)
Local: Sat, Jun 25 2011 2:41 pm
Subject: Re: 3D printers

Not particularly practical for us here in the Smokies, but really worth a
look just for the pure style involved.

*The Solar Sinter Project*

http://www.creativeapplications.net/objects/solar-sinter-objects/<http://www.adafruit.com/blog/2011/06/24/3d-printer-use-sun-as-power-a...>

- samthegiant -


 
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mieren47  
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 More options Jun 25 2011, 3:49 pm
From: mieren47 <miere...@gmail.com>
Date: Sat, 25 Jun 2011 15:49:32 -0400
Local: Sat, Jun 25 2011 3:49 pm
Subject: Re: 3D printers

Now if only we could get one that runs of moonshine and fireflies.

On Sat, Jun 25, 2011 at 2:41 PM, Sam the Giant <samthegi...@gmail.com>wrote:


 
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claudio donndelinger  
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 More options Jun 25 2011, 5:15 pm
From: claudio donndelinger <orias3...@gmail.com>
Date: Sat, 25 Jun 2011 16:15:55 -0500
Local: Sat, Jun 25 2011 5:15 pm
Subject: Re: 3D printers

http://www.youtube.com/watch?v=B3D56IpACME
<http://www.youtube.com/watch?v=B3D56IpACME>Prusa RepRap 3d Printer. Very
affordable. At MidsouthMakers, we have 2 built and another one in
progress. You can get one up and running for around $400-600.

Claudio


 
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Sam McClanahan  
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 More options Jun 26 2011, 8:40 am
From: Sam McClanahan <samthegi...@gmail.com>
Date: Sun, 26 Jun 2011 08:40:33 -0400
Local: Sun, Jun 26 2011 8:40 am
Subject: Re: 3D printers

Definitely a possibility.

- samthegiant -

On Sat, Jun 25, 2011 at 5:15 PM, claudio donndelinger
<orias3...@gmail.com>wrote:


 
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Adrian Sanabria  
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 More options Jun 26 2011, 9:55 pm
From: Adrian Sanabria <adrian.sanab...@gmail.com>
Date: Sun, 26 Jun 2011 21:55:49 -0400
Local: Sun, Jun 26 2011 9:55 pm
Subject: Re: 3D printers

I don't know about the other inexpensive ones, but I saw a cupcake 3D
printer in action at DefCon last year, and was totally underwhelmed. It was
unbearably slow, hot, smelly, and the guy only got one usable result out of
every 5 tries. What he eventually called a "success" looked awful.

I'll admit, it is quite possible that his wasn't well calibrated, or he was
simply using it wrong. Still, I'd thoroughly peruse the reviews before
pulling the trigger on any of the cheaper ones. What looks like a cheap 3D
printer might be a really expensive way to turn strands of plastic into
blobs of plastic.

--Adrian

On Sat, Jun 25, 2011 at 2:36 PM, Sam the Giant <samthegi...@gmail.com>wrote:


 
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Dan Hess  
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 More options Jun 29 2011, 10:56 am
From: Dan Hess <dan9...@gmail.com>
Date: Wed, 29 Jun 2011 09:56:21 -0500
Local: Wed, Jun 29 2011 10:56 am
Subject: Re: 3D printers

Adrian, you are definitely right about underwhelming and that his probably
wasn't calibrated well.  The DIY 3D printers are a way of life, and boy was
I wrong to think it would just plop golden nuggets of plastic on my desk
with little effort.  None the less, with a good bit of configuration and
time invested you can tweak it down and get a really good print.

For the speed, smell, heat, and success, all of those are partly addressed
with the Prusa that Claudio linked.  The printers we are working on here use
PLA plastic, which smells like maple syrup when printing so at least better
than the ABS I'm sure the Cupcake was using.  The speed has increased
drastically with the latest firmware that has been released for them,
running at roughly 100 to 120 mm/s which is over 3x faster than the
originals.  The PLA is also convenient for addressing the heat as it runs at
a much lower temp than the ABS.  PLA you run somewhere in the range of 170C
to 185C, any hotter than that and it becomes so liquidy that it is pretty
much worthless.  I will admit that I'm still in the stages of getting the
success rate of mine up.  It sometimes takes me 2 or 3 tries to get a print
started, but once it is going it prints to completion almost every time,
short of a screw coming loose or a belt slipping (I need to invest in some
Locktite).

What I can and would like to offer you guys is help.  As Claudio mentioned
there are 3 of us with Prusas here in Memphis that are part of the
hackerspace, and over all we have 5 printers in the group.  I'm currently
working to get parts printed for the Nashville guys, but would love to help
yall as well.  I'm sure we could get you parts printed to get going as well
as answer questions, provide calibrating assistance, and some direction on
where to get things.  Just let me know and we'll see what we can do to help.

Thanks,

Daniel H.
Google Voice:  (901) 214-5326

- Copying one is plagiarism, copying many is research.

On Sun, Jun 26, 2011 at 8:55 PM, Adrian Sanabria
<adrian.sanab...@gmail.com>wrote:


 
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Adrian Sanabria  
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 More options Jun 29 2011, 12:25 pm
From: Adrian Sanabria <adrian.sanab...@gmail.com>
Date: Wed, 29 Jun 2011 12:25:49 -0400
Local: Wed, Jun 29 2011 12:25 pm
Subject: Re: 3D printers

Sweet - thanks for the reply and the information! Yes, he was using ABS.


 
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Dan Hess  
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 More options Jun 29 2011, 1:48 pm
From: Dan Hess <dan9...@gmail.com>
Date: Wed, 29 Jun 2011 12:48:59 -0500
Local: Wed, Jun 29 2011 1:48 pm
Subject: Re: 3D printers

Yeah ABS smells terrible.  PLA is a little more temperamental due to
how sensitive it is for temperature, but I personally think it's much
better.

Thanks,

Daniel H.
Google Voice:  (901) 214-5326

- Copying one is plagiarism, copying many is research.

On Wed, Jun 29, 2011 at 11:25 AM, Adrian Sanabria <adrian.sanab...@gmail.com


 
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Sam McClanahan  
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 More options Jun 30 2011, 11:39 am
From: Sam McClanahan <samthegi...@gmail.com>
Date: Thu, 30 Jun 2011 11:39:58 -0400
Local: Thurs, Jun 30 2011 11:39 am
Subject: Re: 3D printers

Dan,

I would love to take you up on your offer of help.  Who would you suggest as
a supplier for the non-printable components of a Prusa?

- samthegiant -


 
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Dan Hess  
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 More options Jun 30 2011, 7:08 pm
From: Dan Hess <dan9...@gmail.com>
Date: Thu, 30 Jun 2011 18:08:58 -0500
Local: Thurs, Jun 30 2011 7:08 pm
Subject: Re: 3D printers

http://www.mcmaster.com/#57105k11/=cz7kox - Pulleys
http://www.mcmaster.com/#7959k24/=cz7kp7 - Timing Belt
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120571991063&ssPag...
Power Supply
http://www.makergear.com/products/plastruder - Stepper Plastruder Kit (.35mm
hybrid for 1.75mm filament)
http://ultimachine.com/content/ramps-diy-kit-complete - Arduino and RAMPS
Shield Kit
http://www.thebigbearingstore.com/servlet/the-1031/608-dsh-2RS-608-ds...
-
608ZZ Bearings

To address each of the above.

   1. The pulleys, I recommend going ahead and ordering those rather than
   trying to use the printed pulleys.  The printed ones will wear out easily
   and can be troublesome to get to grip the belt properly.  You have to order
   the belt anyways so you might as well get something that is going to last
   and is made to precision for it.  The only thing that you might have to do
   is drill out the center of the pulley to get it to fit snug on the motors.
   2. I don't know the precise length you'll need, I'll try to find out.
    What I can say is make sure that you leave enough on the printer itself so
   that you have something to grip hold of to tighten it up.  They're a pain to
   tighten so no point in leaving yourself a nub to try and pull.
   3. You can use an ATX power supply if you so choose, but it needs roughly
   240 watts to run the heated build platform and such.  The advantage of this
   power supply is that it's cheaper than ordering from
   Jameco/Mouser/DigiKey/etc and it is very low profile.  You don't need
   anything but 12v lines so the ATX one provides unnecessary lines at the
   expense of space.
   4. MakerGear is probably the best place to get your hotend from.  He puts
   out quality work, and I highly recommend the hybrid 1.75mm because it
   addresses some issues that older printers had with material expanding and
   plastic sticking once melted.  The 1.75mm is also really nice because you
   can do smaller nozzles and get better resolution on your prints.
   5. The Arduino and RAMPS kit in my opinion is awesome.  It's totally
   modular so rather than having one single board you can replace and swap out
   pieces as you either decide to upgrade or manage to burn something out.
    There are some single board solutions in the works, and they're nice, but
   for myself I just like the option to not have to buy a whole new everything
   when I inadvertently do something stupid that burns it all.
   6. The bearings, you'll need 3 of them.  This store is local to Memphis,
   and if you call in you can haggle with them about the price.  You can likely
   get them as low as about $0.50 ea not including shipping.  If I end up
   sending you any printed parts, I can pick them up local and ship them with
   the printed stuff.

There are some other pieces that I'm missing from here, one being the
motors.  I'll have to track down where we got our motors from.  Other than
that there is the metal hardware, you can use a place called Fastenal to get
what you need of that.  You'll need all 5/16ths diameter 3x3ft smooth rods,
and 4x3ft or 3x4ft thread-all.  You'll also need a bag of washers and bolts
to go on the thread-all.

I'll try and find links for any other hardware that I've left out and get
those posted.

Thanks,

Daniel H.
Google Voice:  (901) 214-5326

- Copying one is plagiarism, copying many is research.

On Thu, Jun 30, 2011 at 10:39 AM, Sam McClanahan <samthegi...@gmail.com>wrote:


 
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Andronicus  
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 More options Jun 30 2011, 8:39 pm
From: Andronicus <aklau...@gmail.com>
Date: Thu, 30 Jun 2011 17:39:31 -0700 (PDT)
Local: Thurs, Jun 30 2011 8:39 pm
Subject: Re: 3D printers
Well with any luck, by Saturday we should have at least one functional
printer in the group and 3 functional axes on another.  Knox on wood
(pun teehee).  Sam if you are really interested in making/starting
your own soon, I have a whole crap load of extra fasteners, extra
parts, as well as a whole bunch of functional experience of how NOT to
get a 3d printer to work.  We just need this first one to function and
we can crank em out.  I'm off work until next Wednesday and these damn
3d printers are my primary mission.

Andy

On Jun 30, 7:08 pm, Dan Hess <dan9...@gmail.com> wrote:


 
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Sam McClanahan  
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 More options Jul 2 2011, 9:22 am
From: Sam McClanahan <samthegi...@gmail.com>
Date: Sat, 2 Jul 2011 09:22:44 -0400
Local: Sat, Jul 2 2011 9:22 am
Subject: Re: 3D printers

Very cool.  3D printers were one of the first things that attracted me to
the maker/hackerspace movement.  I definitely want to get one up and running
for myself.

- samthegiant -


 
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Knox Franklin  
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 More options Jul 6 2011, 8:37 am
From: Knox Franklin <knox...@gmail.com>
Date: Wed, 6 Jul 2011 05:37:48 -0700 (PDT)
Local: Wed, Jul 6 2011 8:37 am
Subject: Re: 3D printers
Hey Sam,  where are you starting on parts as far as what parts are you
acquiring first and so on, i was going to begin with the extruded ones
and go from there to all the nuts, bolts, washers, rods and such. i
ask because i have not been able to actually talk to someone that has
built one... you know experience, like you said last night learn for
others....   thanks.  Knox

On Jul 2, 9:22 am, Sam McClanahan <samthegi...@gmail.com> wrote:

...

read more »


 
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Sam McClanahan  
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 More options Jul 6 2011, 9:30 pm
From: Sam McClanahan <samthegi...@gmail.com>
Date: Wed, 6 Jul 2011 21:30:29 -0400
Local: Wed, Jul 6 2011 9:30 pm
Subject: Re: 3D printers

Knox,
I'm pretty much starting from ground zero.  Andy has offered some left over
parts and Dan has said he might be able to offer us some printed
components.  I unfortunately just had to buy a car so it'll probably be
middle of the month before I can throw any serious money at getting started.

Andy,
How far did you get over the holiday weekend on getting yours up and
running?

- samthegiant -

...

read more »


 
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David Levi  
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 More options Jul 6 2011, 10:13 pm
From: David Levi <dbl...@double-apps.com>
Date: Wed, 6 Jul 2011 22:13:07 -0400
Local: Wed, Jul 6 2011 10:13 pm
Subject: Re: 3D printers

Hey Guys,

On a related topic to 3D printers, has anybody looked into 3D scanners?
This thread got me curious, and a little poking around turned up this:

http://www.david-laserscanner.com/

Basically a dirt-cheap way to do 3D scans.  Seems like the combination of a
3D scanner and a 3D printer could be pretty cool.

-Dave

On Wed, Jul 6, 2011 at 9:30 PM, Sam McClanahan <samthegi...@gmail.com>wrote:

...

read more »


 
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Sam McClanahan  
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 More options Jul 7 2011, 6:49 am
From: Sam McClanahan <samthegi...@gmail.com>
Date: Thu, 7 Jul 2011 06:49:02 -0400
Local: Thurs, Jul 7 2011 6:49 am
Subject: Re: 3D printers

Could be pretty cool.  I'm actually intrigued by the Trimensional 3D
scanning iPhone app from Georgia Tech.

http://www.trimensional.com/

They claim to be able to output an STL file directly so it has some
interesting possibilities if looking currently somewhat limited.

- samthegiant -

...

read more »


 
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David Levi  
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 More options Jul 7 2011, 7:24 am
From: David Levi <dbl...@double-apps.com>
Date: Thu, 7 Jul 2011 07:24:47 -0400
Local: Thurs, Jul 7 2011 7:24 am
Subject: Re: 3D printers
Cool, I was not aware of that app. I'm going to download it and give
it a spin. I'll let you know how well it works.


 
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Bstrdsmkr  
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 More options Jul 7 2011, 10:04 am
From: Bstrdsmkr <bstrds...@gmail.com>
Date: Thu, 7 Jul 2011 07:04:17 -0700 (PDT)
Local: Thurs, Jul 7 2011 10:04 am
Subject: Re: 3D printers
I finally found that link I was talking about at Smoky Mtn Brewery.
This is a PhD project using a standard webcam as a 3d scanner. The
video shows a few bad points in the mesh, but it's acquired and mapped
in about 30 seconds so I'm sure that can be improved. Also, he's not
using a background in the video, just a desk so I'm sure using a green
screen or the like would greatly improve the results. There is a
similar project using a Kinect, but the technique is different and I
can't find the link =(

http://mi.eng.cam.ac.uk/~qp202/

On Jul 7, 6:49 am, Sam McClanahan <samthegi...@gmail.com> wrote:

...

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David Levi  
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 More options Jul 7 2011, 1:59 pm
From: David Levi <dbl...@double-apps.com>
Date: Thu, 7 Jul 2011 13:59:33 -0400
Local: Thurs, Jul 7 2011 1:59 pm
Subject: Re: 3D printers

A google search of '3d kinect scanner' turns up a bunch of links.

I couldn't tell if the guy at Cambridge had posted any software.  The video
was pretty cool, though.

I downloaded the Trimensional app, here are a couple scans I made:

http://www.double-apps.com/Trimensional.gif
http://www.double-apps.com/Trimensional2.gif

You can also e-mail 3-d model files from the app.  It seems like a cute
gimmick, though, since it only produces a model from a single perspective,
it doesn't create a complete model.  It also seems to produce pretty
low-quality scans.

-Dave

...

read more »


 
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