AW: SpeedForm

From: Geiger, Martin (EP/QFM) (
Date: Wed Feb 09 2000 - 10:38:47 EET

> -----Ursprüngliche Nachricht-----
> Von: []
> Gesendet am: Dienstag, 8. Februar 2000 21:38
> An:
> Betreff: SpeedForm
> Has anyone on the List heard of or used SpeedForm for
> prototyping? What is
> speedform??

SpeedForm is (was) a company in south west Germany, which developed a
casting process called SpeedVac. Some machines were sold before the
production was stopped. Several apparatus are in use at service bureaus.

Based on a master (typically stereolithography) silicone forms are
manufactured similar to vacuum casting. The silicone tool is used to cast
wax in order to get wax copies of the master. The wax copies can be
assembled to wax cluster similar to investment casting. After this, the wax
cluster will be put into a cuvette and will be backfilled with embeding
material. The next step is burning out the wax. A fully automatic casting
process allows to easily cast several metal alloys. It is a different
pressure casting process. So, the micro-structure of the alloy will be
between investment casting parts and die casting parts. The surface is quite
good. Possible are parts up to about 250mm.

The apparatus has to chambers and several modules for the different steps.
Simlar processes are recently offered by different companies.

Best Regards


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