[Imc-makerspace] [Fwd: RE: Tooling for Injection-Molding?]

[Stewart Dickson]

Here's the answer to a question which came up at the MakerSpace Open 
House.   BTW, there is no SLS locally, that I
know of.   The University has Z-Corp 3D Printing <http://www.zcorp.com>, 
Objet Eden <http://www.objet.com> and 3D Systems Stereolithography 
<http://www.3dsystems.com>.

-Stewart

-------- Original Message --------
Subject: 	RE: Tooling for Injection-Molding?
Date: 	Wed, 3 Mar 2010 12:16:58 -0500
From: 	Mike Philpott <mphilpott at apriori.com>
To: 	Stewart Dickson <MathArt at Emsh.CalArts.edu>
CC: 	Coverdill, Robert E <coverdil at illinois.edu>
References: 	<4B87D294.3040400 at Emsh.CalArts.edu> 
<D032BC21AB3F9F43BC8E97CC7E1794DA33234FADA5 at DSMAILBOX.ad.uiuc.edu> 
<4B8D9C96.8070501 at Emsh.CalArts.edu>



Hi Stewart,

There are a number places I could recommend for injection molding, but 
nothing local.  As you might imagine, best price will be overseas (China 
or Taiwan). Before looking at that though, because it's going to be 
really expensive if you are just making a few, I suggest you consider 
the SLS rapid prototyping process and using some of the high 
strength/modulus materials.  Duroform GF for example is a glass filled 
nylon with tensile strength 590,000 psi and flexural modulus of 450,000 
psi.  Basically, as good as injection molded polypropylene parts now.

Regards

Mike

 

Dr. Mike L. Philpott

Director of Concurrent Design and Manufacture Lab.

Department of  Mechanical Science and Engineering,

University of Illinois, 1206 W. Green Street, IL 61801

Ph: (217) 244-3184

 

------------------------------------------------------------------------

*From:* Stewart Dickson [mailto:MathArt at Emsh.CalArts.edu]
*Sent:* Tuesday, March 02, 2010 5:18 PM
*To:* Mike Philpott
*Cc:* Mike Philpott
*Subject:* Re: Tooling for Injection-Molding?

 

Coverdill, Robert E wrote:

Stewart,

You might inquire with Mike Philpott regarding injection molding.  I know there are a number of internet-based sites for this, and he might be able to make a recommendation.

 

Bob

 

-----Original Message-----

From: Stewart Dickson [mailto:MathArt at emsh.calarts.edu] 

Sent: Friday, February 26, 2010 7:54 AM

To: Coverdill, Robert E

Subject: Tooling for Injection-Molding?

 

Good Morning, Bob,

 

At the following URL:

http://emsh.calarts.edu/~mathart/Annotated_ConicSect.html <http://emsh.calarts.edu/%7Emathart/Annotated_ConicSect.html>

are photographs of the Braille-Annotated Conic Sections.

 

The model has turned out to be rather too fragile for repeated 

demonstration.

So, I have disassembled it -- super-glued repairs -- and am making a set 

of rubber molds for reproducing the parts in a more durable polymer resin.

 

I have about 1/2-gallon of Polytek EasyFlow 60 Urethane resin, which I 

can use to replace some parts for the moment.

I can't find any data on the flexural strength of this material, so I 

don't really know whether this will be an improvement or not.

 

But, for the future, I definitely need to look for injection-molding 

facilities.  Do any exist locally?

 

I have showed my models to Prof. Morton Heller, a cognitive psychologist 

at Eastern Illinois University who works on measuring the spatial 

cognitive mappings of blind people.  

http://www.eiu.edu/~psych/faculty/profile.php?id=maheller <http://www.eiu.edu/%7Epsych/faculty/profile.php?id=maheller>

 

Morty suggested applying for SBIR funding to support this.    

http://www.sbir.gov/solicitations

There is a solicitation which fits the project:

  

> Department of Education National Institute on Disability and 
> Rehabilitation Research (NIDRR) SBIR 2010
> Closing Date:  March 15, 2010
>     
So, I have a couple of weeks to knock it out.   

http://www2.ed.gov/programs/sbir/applicant.html

 

-Stewart, http://us.imdb.com/Name?Stewart+Dickson      

http://www.ifp.uiuc.edu/~sdickson <http://www.ifp.uiuc.edu/%7Esdickson>

http://emsh.calarts.edu/~mathart/MathArt_siteMap.html <http://emsh.calarts.edu/%7Emathart/MathArt_siteMap.html>

 

 

 

  

 


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