Re: RP? A cute LOM based novelty item!

From: Thierry Dormal (
Date: Fri Oct 31 1997 - 17:15:32 EET


Sorry to disappoint you but I think the Swedish company Sparx disappeared
around 1994-1995.

We have an Hot Plot machine at CRIF since 1992. This Sparx machine used a
heat electrode cutting plotter and A3 self adhesive plastic sheets (PS).
Each layer was glued manually on top of the previous one with the help of a
mounting fixture. The sheet thickness is 1 mm so the precision is rather bad
but the most important problem was linked to the numerous bugs in the slice
software. That's why we rewrote completely the Sparx software to be able to
produce parts with this Hot Plot machine.

Since 1995, we have no news from Sparx and from any Hot Plot users...
Now that we use SLA, FDM and EOSINT machines inside our company, the Hot
Plot is a little bit forsaken. We show this machine only to collectors.


At 13:41 31/10/97 +0100, you wrote:
>I just want to add, that there is a company, Sparx, in M÷lndal in Sweden.
>They have product similar to the JP System 5, which they call Hot Plot.
>See also a comment from Terry Wohlers the 12/1 -96 at
>At 09:34 1997-10-30 -0800, you wrote:
>>In response to Jason Dickman's (Hasbro Toys), George Sachs, Rick Lott:
>>The "new" toy described doesn't seem new to me. I would have a very
>>hard time believing that the R&D group at Hasbro hasn't seen Schroff
>>Development's JP System 5 - low cost desktop concept modeler! (if
>>you're not familiar with JP System 5 - check out, or
>>the research efforts of Dr. Charles Thomas, University of Utah
>>JP System 5 has been on the market for approx. 2 years and it is
>>marketed as an educational tool for introducing people to the concepts
>>of Rapid Prototyping.
>>Parts are created on JP System 5 from layers cut on a sign-making
>>plotter equipped with a knife blade. The layers are manually stacked on
>>a registration board to create the part.
>>JP System 5 evolved from Shapemaker I - a low cost educational tool for
>>RP developed by Dr. Charles Thomas and his students at the University of
>>The 3D puzzle comes with pre-cut layers that need to be sorted and
>>stacked on a registration board to generate a sculpture of a famous
>>person. Again a very familiar theme to those who read any papers
>>published by the RP research groups at the U of Utah or CAM/LEM - Case
>>Western - groups that have made extensive use of human head models as
>>examples for their Layered Manufacturing research.
>>As I had used JP System 5 and its predecessor - Shapemaker I, I felt
>>compelled to make these clarifications for those who may not be aware of
>>this background information.
>>Disclaimer: The opinions expressed above are strictly personal and
>>don't reflect those of my employer.
>>Andrei S. Novac
>>Implementation Engineer
>>Parametric Technology Corporation
>>11000 SW Stratus, Suite 360
>>Beaverton, OR 97008
>>tel: (503)646-1632
>>fax: (503)626-5122
Thierry DORMAL
RPT manager


Parc Scientifique de la Cense Rouge
Rue du Bois Saint-Jean, 12
B - 4102 Seraing BELGIQUE
E-Mail :
TÚl :32.4.361.87.00
Fax 32.4.361.87.02

This archive was generated by hypermail 2.1.2 : Tue Jun 05 2001 - 22:40:40 EEST