Re: 3D Lightyear (Humble Pie For Bob)

From: James P. Harrison (
Date: Fri Jul 30 1999 - 16:45:41 EEST

Hi Everyone,

I have been cursing, I mean using, 3D Lightyear for about 3 weeks. Here
are my comments.

1.) The .bff files are about 1/8 the size of Maestro .bff files. Great!
2.) Slices and converges large builds in about 1 or 2 hours instead of 1
or 2 days! Slicing at the speed of sound!
3.) To set the beam comp, using Accumax, you will have to trick it when
setting up build platforms
       or you can use their default. Good.
4.) Not user friendly when it comes to customizing. Like pulling teeth
from a wild boar with tweezers!
5.) The SLA5000 parameters are OK, about 5% slower than my parameters.
6.) The SLA500 parameters are poor. For some unknown reason they left
out the weave parameters?
7.) If you are using a non-CIBA resin you have a lot of work ahead of
you! The parameter files are in
binary code instead of text. To use a non-CIBA resin: copy a current
CIBA resin file with similar Dp and
Ec values. Modify all parameters, if you can, and fudge the auto z
correct. Good Luck!!

This program has come along way. My frustration comes from trying to
customizing it to my
parameters that work on the SLA-500! If every SLA machine were the same,
then it would be an ok program
but we all know that they aren't. I also realize that it takes time to
learn a new program and hopeful the new
release corrects these problems.


James P. Harrison Director Of Operations
3Dimensional Engineering;
2991 N. Powerline Rd. Pompano Beach, FL. 33069
954-972-9906 (phone) 954-972-8903 (fax)

On Thu, 29 Jul 1999 07:45:25 -0700 "Miller, Michael W"
<> writes:
> Bob, Have you built any quickcast yet? Any words of wisdom or
> dismay? ... I'm especially curious if they've fixed vents and drains
> problems and given the customer more flexibility in their placement.
> Also, I don't understand why the preparation software will allow
> higher scan speeds in the build. Not that I'm not excited... I've
> got a hot new P3 Zeon ready for 3D light speed.
> Michael W Miller (
> The Boeing Company MS 17-PE B-XT62
> Propulsion Experimental Hardware 206-655-3289
> Rapid Prototyping 655-4366 Lab 655-4365
> > ----------
> > From:[]
> > Sent: Wednesday, July 28, 1999 8:58 PM
> > To:
> > Subject: Re: 3D Lightyear (Humble Pie For Bob)
> >
> > A few weeks ago I blasted 3D Systems saying 3D lightyear was
> vaporware. It
> > was of course just ancious anticipation on my part. 3D Lightyear
> is now
> > shipping (according to sources at 3D). I have been using the beta3
> version of
> > lightyear for about a week now. I am truly humbled because this
> software is
> > even better than I could have imagined. What used to take us 5 or
> 6 hours to
> > slice on our old SGI Indigo II now slices in 15 minutes on my much
> lower cost
> > SGI NT workstation. They have automatic verify and automatic part
> placement
> > which is really nice for when your building bunches of parts. The
> new copy
> > feature to make multiples of parts is really handy.
> > All the resin and recoater parameters are included and seem to
> work very
> > well right out of the box.
> > The software is all windows based and very easy to operate
> with online
> > help that is very well written.
> > The buildstation 5 software is also very solid. The line
> drawing is now
> > done differently so I'm told. We were able to increase our drawing
> speed from
> > 75 on borders and 125 on hatching up to 125 borders and 200
> hatching with no
> > apparent degredation in quality. This in combination with the good
> SL5510
> > resin parameters has decreased our buildtimes by as much as 50%
> from before.
> > Tony the 3D field service technician in the Chicago area had
> everything
> > running in about a day. He really knows his stuff.
> > I just want to commend the 3D Systems development team for the
> best
> > software product I have seen in a long while. I hope this gets me
> back in
> > good graces with 3D now.
> > with egg on my face
> > Bob Morton
> > Fusion Engineering
> >
> > For more information about the rp-ml, see
> >
> For more information about the rp-ml, see

James P. Harrison Director Of Operations
3Dimensional Engineering;
2991 N. Powerline Rd. Pompano Beach, FL. 33069
954-972-9906 (phone) 954-972-8903 (fax)

For more information about the rp-ml, see

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