From: Bob Olsen (Bob@protogenic.com)
Date: Thu Jan 04 2007 - 19:44:57 EET
Both Somos and 3D make "tooling" SLA resins (Proto tool and follow ons,
Bluestone), surprised we haven't heard more about that in response to
this question. I am sure both manufacturers' could help with
recommendations on how to proceed. Cheers, bob
-----Original Message-----
From: owner-rp-ml@rapid.lpt.fi [mailto:owner-rp-ml@rapid.lpt.fi] On
Behalf Of Brett Lyons
Sent: Wednesday, January 03, 2007 9:43 AM
To: rp-ml@rapid.lpt.fi
Subject: RE: [rp-ml] SLA Resin for Rapid Tooling
Hi,
I use ZCorp's material for tooling applications (vacuum bag composite
molding, green sand casting, some thermal spray work etc) and really
like it, but I would be surprised if you could get more than one shot
from such a tool in an injection molding context. If thats what you have
to use maybe could do infiltrate under vacuum with a high temp, filled
resin (but then you might find distortion issues during cure).
But hey, its cheap and fast enough to experiment with...
On a similar note, I sent a plaster-epoxy core box to a green sand
foundry, assuming they would do an air or chem set core in it, but they
tried to make a blown core with it. They got one blown core nicely, then
the box exploded on the second shot (IIRC the core was blown at 2bar and
the preheat was something like 200f). You could always make a positive
and pour a tooling resing over it though...
Cheers
-Brett
Brett Lyons
Senior Research Technician, UM3D Lab
Graduate Student, Mechanical Engineering FSAE, SAE, SME, AFS
Quoting "Zubrickie, Robert F" <bobz@tycoelectronics.com>:
> REL,
>
> I have been successful with SI-40 for sanopreme. Melt temperature up
> to and not exceeding 500 degrees F. Contact temperature was down
> around 270 degrees F. Anything higher than that gave thermo cracking
> to the SLA material. Cycling was around 2 1/2 minutes and I ran the
> mold cold. For you first mold run 4 degrees draft on your mold. Yes,
that is allot.
> Good luck and let us know how you make out.
>
> <http://www.3dsug.org/>
>
>
> Regards,
> Bob Zubrickie
>
> 2007 3DSUG Chairperson
>
> http://www.3dsug.org/
>
> ________________________________
>
> From: owner-rp-ml@rapid.lpt.fi [mailto:owner-rp-ml@rapid.lpt.fi] On
> Behalf Of ChathamRes@aol.com
> Sent: Tuesday, January 02, 2007 3:17 PM
> To: rp-ml@rapid.lpt.fi
> Subject: [rp-ml] SLA Resin for Rapid Tooling
>
>
> What is the experience of the list members when it comes to SLA resins
> for rapid tooling? What would you recommend for a low pressure
> injection molding application where the injected polymer temperature
> is 350 F.
>
> Does the ZPrinter material filled with epoxy have a chance at working
> at this temperature?
>
>
> REL
>
This archive was generated by hypermail 2.1.7 : Tue Jan 01 2008 - 18:12:58 EET