Re: Rapid Tooling alternative

From: Victor Moreno (vmoreno@dgi6.mty.itesm.mx)
Date: Wed Jun 11 1997 - 20:21:38 EEST


Hi Mike,
Thank you for your reply, I'd read a document of Dr. Jacobs where is
mentioned the use of SL cavities and cores backed with aluminium-filled
epoxy resins. For these cavities the SL parts are made using a SL 5170
epoxy resin and the ACES style ( I think it is called ACES injection
Molding or "AIM").
Here in my university I have a SLA 250 that is still working with an acrylic
resin (5149), this is a problem because the resin has a lower resistence
than the epoxy resin, so I'm not sure if the acrylic resin will work.

Have you try the AIM process with an acrylic resin ?

Regards.

  
_______________________________________________________________________________
                        Victor Cuauhtemoc Moreno
                          Research Engineer
                   Centro de Sistemas de Manufactura
                        Monterrey, NL, Mexico
                    Tel.: (8) 358 20 00 ext. 5119
                         Fax : (8) 328 41 23
                   e-mail : vmoreno@dgi6.mty.itesm.mx

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On Tue, 10 Jun 1997 uq607848@hsc.hac.com wrote:

>
> aluminum filled epoxy is used to make rapid injection molded plastic molds. the mold cavity is made directly as an RP part, then back filled with aluminum filled epoxy with copper tubing cast in to remove heat from the mold while in use. These molds are good for up to 1000 parts, 250 parts typical. this info is from a presentation by Paul Jacobs on rapid tooling at a UCLA extension course in May. the pressure of the injection molded material keeps the RP mold cavitiy from deforming at the elevated temperature.
>
> mike doty
>



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