Re: Antw: Modelling HO Scale Trains with RP

From: Rolf Hubert (
Date: Wed Jan 05 2000 - 16:04:52 EET

The Sanders machine is perfect for this application. Excellent surface
finish and castable. No need to remove supports, automatically removed
in a solution at 60 C. No need to position it in a special way, no need
to cut it in half.

Rolf Hubert
Sanders Prototype, Inc.

Bathsheba Grossman wrote:
> On Tue, 4 Jan 2000 wrote:
> > In a message dated 1/4/00 4:46:03 AM Eastern Standard Time,
> > writes:
> >
> > << 2. RP-Models are still too expensive for pure "hobby"-applications>>
> > Fraid so at this time. But not necessarily for all time.
> It just depends how much cash you're willing to plow into your
> hobby-horse.
> > <<3. Disturbing support structures, that have to be removed afterwards from
> > very detailed structures>>
> >
> > There we have quite a bit of experience. There are many approaches that can
> > be taken, orienting the model in such a way to minimize the supports, cutting
> > the model in half to keep supports on hidden surfaces, etc. Not a big problem
> > actually.
> Do you find? I would love to use ThermoJet - for me, that would mean
> dissecting parts and building the pieces with the supports on the
> inside - but so far I can't visualize a way to make it work.
> I don't mind ending up with a hollow part, but the trouble is, if I
> orient a piece so that the supports are on the inside, then they're
> also on the edge surfaces that must match precisely when the parts are
> put together, messing up the fit. In an assemblage that may contain
> 12 or 24 modules, I need a fairly precise fit to make it work.
> Suggestions welcome - I'm still without an RP process that can do my
> parts, is affordable (not over 2 x ZCorp's pricing) and is
> consistently investment-castable.
> I'm starting to think I should give it a rest for a year or two -
> maybe make some things out of planar elements and cut them out by
> water-jet. I've got those bleeding-edge blues.
> -Sheba
> Bathsheba Grossman (831) 429-8224
> Digital Sculpture
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