From: Kiran Shastry (email@example.com)
Date: Tue Nov 19 2002 - 18:44:52 EET
--- firstname.lastname@example.org wrote: > Dear Mr. Shastry:
> Stratasys has introduced a 0.005" slice for its
> Maxum, which has improved
> the accuracy and finish. Interestingly, the first
> thing a prospective
> customer or user does to validate accuracy claims is
> measuring all
> geometries (surface flatness, hole and pin
> diameters, straightness of thin
> walls, long wall sections, and longest distance
> between points)on a CMM.
> The FDM part, especially with the new 5 slice
> measure very well. Thin
> sections are not affected by humidity or light
> making FDM parts
> geometrically stable over months as well as years.
> Other systems in its
> product line will also be capable of the new higher
> accuracy/surface finish
> capability in the very near future. Other
> improvements have been made in
> down facing surfaces (support to build boundaries)
> to where they are as good
> a up-facing surfaces.
> With regards to speed, it all depends on how you
> classify speed. Pure
> machine build speed is, hands-down, the best with
> the SLA 7000. However,
> most people consider speed on how fast a part can be
> in the hands of the
> requestor (from .stl to delivery of a part). With
> the FDM process there is
> no need to cure a part to harden it. With the FDM
> process there is no need
> to go through long system heat ups and cool downs.
> When the part is done,
> it can be removed from the system and supports
> immediately can be taken off.
> Further improvements have been made in support
> structure build strategies to
> reduce the amount of material used thus improving
> speed. Finally, a "sparse
> fill" techniques can be implemented, especially on
> thick-walled parts, to
> reduce the amount of material used thus, again,
> improving speed. The
> internal filling lattice can be defined by the
> Price performance is another measure a lot of people
> consider. You might
> want to consider that three Titans can be purchased
> for less that one SLA
> 7000. You might want to consider what it will cost
> to create a facility to
> run the SLA of SLS system. The FDM system run in an
> office environment.
> The bottom line is that every RP sytem in the market
> place does have its
> strengths and weaknesses. I do hope this gives you a
> better picture on some
> of the merits of the FDM process.
> If you would like to further discuss some of the new
> features that can be
> found in the FDM process, please contact Andrew
> Tsui, Asia Manager for
> Stratasys and ATSUI@STRATASYS.COM.
> Jerry Lehr
> Central Region Manager
> Stratasys, Inc.
> -----Original Message-----
> From: Kiran Shastry
> Sent: Monday, November 18, 2002 7:43 AM
> To: JB Ventures BV
> Cc: RPML
> Subject: Re: Stratasys - SPT - Slow Prototyping
> Dear Sir,
> This is not Monday morning feelings.
> You said it, you slow machine has to run
> But this is surprising SLS customers happy with FDM
> parts ?
> Can somebody tell me any contribution from FDM in
> 2 years in increasing accuracy/finish etc ? In
> discrete terms.
> --- JB Ventures BV <email@example.com> wrote: >
> message is clear Kiran.
> > We run a FDM Titan (PolyCarbonate) machine for
> > service in Europe and is running almost
> > continiously. With your opinion in mind, guess the
> > former SLS customers for wich we are building
> > for the last half year must be all complete fools!
> > Should your reply be taken seriously of has it
> > somewhat to do with your monday-mornin-feelings?
> > Regards,
> > ----- Original Message -----
> > From: Kiran Shastry
> > To: firstname.lastname@example.org
> > Sent: Saturday, November 16, 2002 7:01 PM
> > Subject: Stratasys - SPT - Slow Prototyping
> > List,
> > Saw a lot of mails on FDM & slowness etc.
> > I do not know how long this Glue making like
> > technology will survive. I hope till the the
> > they
> > find new customers everytime ?
> > If real comparison with SLA/SLS with FDM wanted,
> > then
> > ask users of both the techology. For only FDM
> > users,
> > it is definitely great machine.
> > For me Stratasys is just imitating 3D Systems,
> > their news article, etc. This is the company
> > talks about % all the time, everything put in %,
> > looks
> > good. FDM Quantum is 50 % faster, Maxum is 50 %
> > faster
> > than Quantum, etc. Just recently they talked
> > high
> > resolution wire or so, without mentioning any
> > dimensions.
> > Kiran Shastry
> > Singapore
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