Re: Minimum feature sizes on RP parts

From: thoms1991 (thoms1991@hotmail.com)
Date: Tue Jul 23 2002 - 18:25:24 EEST


Steven, et al,
My definitions and comments are bounded by %%%%% below:
Best Regards, Tom Richards, Metallurgist Thoms1991@hotmail.com

----- Original Message -----
From: "Steven Adler ( A3DM )" <adler@a3dm.com>
To: "Mike Feygin"
Sent: Friday, July 19, 2002 2:14 PM
Subject: Re: Minimum feature sizes on RP parts

> Curious ....
>
> How does one define "a feature"...?

%%%%% the intersection of surfaces%%%%%
>
> How does one define a acceptable level of quality to define that smallest
> feature....?

%%%%% the radius of the intersection and the surface finishes%%%%%%
>
> How many layers of what thickness.....?

&&&&&&& is the principal determinant%%%%%%%
>
>
> I am currently building a project where the client requested 0.001 ... I
> suggested a sample at 0.002 and was happier with my part even though it
was
> sliced at twice the Z thickness or half the number of layers.... It isn't
> all about slice thickness or jet/beam size
>
> I think this is a trick question but, an interesting thread
>
>
> Steven Adler, CEO
> Automated 3D Modeling, Inc
> www.a3dm.com
> adler@a3dm.com
> 603.433.4369
> ----- Original Message -----
> From: "Mike Feygin" <mfeygin@cubictechnologies.com>
> To: "'Paul-Henri Tinguely'" <ph.tinguely@altair-consulting.com>; "'Candi
> Majewski'" <candimajewski@hotmail.com>
> Cc: <rp-ml@rapid.lpt.fi>
> Sent: Friday, July 19, 2002 5:17 AM
> Subject: RE: Minimum feature sizes on RP parts
>
>
> > Hello Candi,
> >
> > You should be able to produce .2mm features with LOM. After all the
laser
> > beam spot size is usually within .13-.15mm. The XY positioning system's
> > resolution is a lot better than that. You probably need to define what
> you
> > mean by a feature. Would it be a radius of a minimum circle, a radius
at
> a
> > corner, a minimal wall thickness?
> >
> > Best regards,
> >
> > Michael Feygin
> >
> > -----Original Message-----
> > From: owner-rp-ml@rapid.lpt.fi [mailto:owner-rp-ml@rapid.lpt.fi]On
Behalf
> Of
> > Paul-Henri Tinguely
> > Sent: Friday, July 19, 2002 5:19 PM
> > To: Candi Majewski
> > Cc: rp-ml@rapid.lpt.fi
> > Subject: Re: Minimum feature sizes on RP parts
> >
> > Hello Candi,
> >
> > On the list you mentionned wax jet printing with 0.2 mm,
> > you need to say 0.013 mm with the Pattern Master from Solidscape
> >
> > With my best regards
> > Paul-henri Tinguely
> >
> > Altair Consulting
> > http://www.altair-consulting.com
> >
> > Candi Majewski wrote:
> >
> > > Dear list,
> > >
> > > I am trying to put together an information sheet detailing current RP
> > > processes. One thing I am interested in is the minimum feature size
> > > which can be successfully produced using each process.
> > >
> > > Below is a list of the processes I am looking at, along with the
feature
> > > sizes I have down at the moment.
> > >
> > > I am interested in any comments anyone may have - are these numbers
> > > reasonable, have you successfully produced smaller features than
these,
> > > or are these sizes unrealistic?
> > >
> > > Stereolithography - 0.1mm
> > > Fused Deposition Modelling - 0.2mm
> > > Direct Metal Laser Sintering (EOS) - 0.2mm
> > > Laser Sintering (3D Systems) Metal - 0.2mm
> > > Laser Sintering (3D Systems) Plastic- 0.2mm
> > > Laser Sintering (3D Systems) Sand - 0.5mm
> > > Wax Jet Printing - 0.2mm
> > > 3-D Printing (Soligen) - 0.5mm
> > > 3-D Printing (Pro-metal) - 0.2mm
> > > 3-D Printing (Z-Corp) - 0.5mm
> > > Laminated Object Manufacturer - 0.5mm
> > > Ink Jet Printing (Objet) - 0.05mm
> > >
> > > Any comments would be appreciated!
> > >
> > > Have a great weekend,
> > >
> > > Candice
> > >
> > > Candice Majewski
> > > Rapid Manufacturing Group,
> > > Loughborough University,
> > > Loughborough,
> > > UK LE11 3TU
> > > Tel: +44 (0) 1509 227564
> > > Fax: +44 (0) 1509 227549
> > >
> > > _________________________________________________________________
> > > Chat with friends online, try MSN Messenger: http://messenger.msn.com
> > >
> > >
> > > 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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