thank you

From: mepstein (mepstein@temple.edu)
Date: Sat Feb 16 2002 - 03:34:45 EET


Hello everyone,
I just wanted to thank you all for the interesting responses I received from
everyone. I now have so much more to think about! You all greatly continue
to add to my knowledge, I have learned a great deal from reading all of the
posts on this list and I enjoy it. So, THANK YOU!!
-Molly Epstein

>> Hello,
>> I am new to this list and I wanted to introduce myself. My name is Molly
>> Epstein, I am art student and am very interested in rapid prototyping
>> processes. I don't know if this list gets philosophical or if it just
>> technical, but it seems pretty informal and welcoming. This post from
>Lamar
>> Davidge made me think of a lot of things that I believe to be a really big
>> problem in my experience with people. My school is the only college that
>I
>> know and it is what I am responding to, so bare with me but I really feel
>that
>> the next generation of students coming out of great art schools really do
>not
>> know the fundamental requirements of making things work well, and using
>tools
>> and machines correctly, not just making mistakes but really not
>understanding
>> the way things work. It seems that we are rushed and pushed away from
>> learning how things work, or how to do something with the best
>craftsmanship
>> and quality. How do any of you feel about this? Have any of you seen a
>> digression in quality and craftsmanship throughout your time doing what
>you
>> are doing?
>> -Molly
>>
>>
>>
>> Will,
>> >
>> > You forgot to mention that tool life is also affected by the ability
>of
>> >the employees who are responsible for running the tool. I have seen some
>> >very simple tools ruined on the first shot due to mistakes, a 150 ton
>press
>> >closing on an aluminum or epoxy tool can wreak havoc, not to mention what
>> >injecting at 2500psi, instead of 350 psi, can do to a fragile tool. Also
>> >epoxy is very strong, but if you drop it on the floor with the core side
>> >down it wont last long. The best constructed tool, with the best possible
>> >design, wont last long if you dont have people who are skilled running
>it.
>> >
>> >Lamar Davidge
>> >-------Original Message-------
>> >
>> >From: Pattison, Will
>> >Date: Friday, February 01, 2002 06:35:11 PM
>> >To: rp-ml@rapid.lpt.fi
>> >Subject: RE: Some reliable equations for RT
>> >
>> >in my experience, the only equation that can be used to determine shot
>life
>> >in a rapid tool is something like:
>> >
>> >tool life is inversely proportional to part complexity, inversely
>> >proportional to how many parts you need, inversely proportional to how
>much
>> >your customer is willing to spend, inversely proportional to how fast
>they
>> >need parts, directly correlated to the material they want, and directly
>> >proportional to the real toolmaking knowledge that goes into design of
>the
>> >rapid tool.
>> >
>> >i'd be curious to see any mathematical model that effectively takes all
>that
>> >into account.
>> >
>> >will pattison, skeptic
>> >product development
>> >ignition
>> >plano, texas
>> >www.ignitioninc.com
>> >
>> >-----Original Message-----
>> >From: Chang-Shik Min [mailto:mcs9413@hotmail.com]
>> >Sent: Friday, February 01, 2002 9:23 AM
>> >To: rp-ml@rapid.lpt.fi
>> >Subject: Some reliable equations for RT
>> >
>> >
>> >
>> >Dear Rapid Tooling specialists:
>> >
>> >Hello...how are you today ? I have survived this field of RT research
>since
>> >1994.
>> >Based on statistics,probability and stochastics,I have been trying my
>best
>> >to simplify all the RT business processes,especially for quoting and
>process
>> >
>> >control.
>> >Meanwhile,I have recently come up with some highly reliable empirical
>> >equations for tool (which is made by RT methods)life estimation,part cost
>> >estimation for low-mid volume production from RT molds.
>> >Is there any one who has ever tried to make some empirical equations for
>RT
>> >?
>> >Any comment you could give me would be greatly appreciated.
>> >TIA
>> >
>> >
>> >
>> >
>> >
>> >
>> >_________________________________________________________________
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>> >
>> >
>> >For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/
>> >
>> >For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/
>> >
>> >
>> >For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/
>> >
>> >
>> >For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/
>> >
>> >
>> >For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/
>> >.
>>
>>
>> For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/
>>
>>
>
>
>For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/

For more information about the rp-ml, see http://rapid.lpt.fi/rp-ml/



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