RE: RP and Jewelry Question: Complete burnoff by the JUMA "Blackrohr" Rapid Burnout System

From: Pierce, Steven E (
Date: Thu Oct 30 2003 - 17:33:38 EET

I didn't see anything addressing the ash issue... Is there any data you may be able to share?

-----Original Message-----
From: Steven Adler ( A3DM ) []
Sent: Wednesday, October 29, 2003 1:56 PM
To: 'Mazouri';;
Subject: RE: RP and Jewelry Question: Complete burnoff by the JUMA "Blackrohr" Rapid Burnout System

Now here is something very interesting...anyone have one of these JUMA systems in operation....?





Steven Adler

Automated 3D Modeling, Inc


>>>>>-----Original Message-----
>>>>>From: Mazouri []
>>>>>Sent: Wednesday, October 29, 2003 10:44 AM
>>>>>Subject: RP and Jewelry Question: Complete burnoff by the
>>>>>JUMA "Blackrohr" Rapid Burnout System
>>>>>Environment friendly and energy-saving burnout process for
>>>>>metal casting in
>>>>>rapid prototyping and foundries.
>>>>>Direct investment cast, preferably under vacuum, can
>>>>>indeed be used to turn any
>>>>>RP part into a piece of metal. For this the RP pattern is
>>>>>used as the investment
>>>>>for making a ceramic mould around it and then burning off
>>>>>the RP pattern.
>>>>>With the unique Blackrohr Rapid Burnout System the burn
>>>>>out protocol for any RP
>>>>>material no longer has to be long and using high temperatures:
>>>>>The Blackrohr Rapid Burnout System is an additional unit
>>>>>for furnaces for the
>>>>>complete, smokeless and odourless combustion of patterns
>>>>>made of prototype
>>>>>materials at very low temperatures of max. 250 centigrades
>>>>>(480F). With
>>>>>wax/thermal polymers it's significantly lower and shorter.
>>>>>By this method all 3D patterns from Styropor, polystyrene (SLS),
>>>>>SLA/STL-materials, thermal polymers, LOM laminates, PA,
>>>>>ABS, and even from wax
>>>>>or resin infiltrated starch/cellulose powder used on 3D
>>>>>printers can be embedded
>>>>>for the lost pattern investment casting of metal parts
>>>>>directly into plaster-,
>>>>>ceramic- or sand-moulds and completely burned out (fused)
>>>>>at temperatures of
>>>>>around 250 centigrade without residue nor fume.
>>>>>The JUMA Blackrohr Rapid Burnout System (design patent
>>>>>registered, and European
>>>>>patent pending), which won an EuroMold 2001 and several
>>>>>other awards for
>>>>>excellent innovation, blows an especially prepared air
>>>>>into the chamber of the
>>>>>kiln. By this process the air becomes an aggressive gas
>>>>>which compulsorily leads
>>>>>all hard to burn materials to a chemical combustion
>>>>>reaction. Developing
>>>>>pollutants are neutralized likewise. A catalyst is not
>>>>>necessary either.
>>>>>"Although for annealing the ceramic mould higher
>>>>>temperatures may be necessary
>>>>>we managed to develop an environment friendly and
>>>>>energy-saving system for the
>>>>>complete burnoff of RP patterns at a temperature of just
>>>>>250 centigrade. Others
>>>>>couldn't succeed at 1450 centigrade (2642F)," told us
>>>>>Dipl.-Ing. A. Mazouri,
>>>>>the inventor and managing director of JUMA Sonderanlagenbau GmbH.
>>>>>The system is applicable for rapid prototyping, foundries,
>>>>>jewellery industry
>>>>>and dental furnaces and even for incinerators.
>>>>>Use of the JUMA Blackrohr Rapid Burnout System will result
>>>>>in low combustion
>>>>>temperatures for all materials, short burnout cycles by
>>>>>fast fusion beginning
>>>>>already during heating up, residue-free fuse results at
>>>>>only a fraction of the
>>>>>energy consumption, as well as reduced gasses and fumes
>>>>>for your health.
>>>>>Casting under vacuum is recommended to produce prototype
>>>>>parts or short runs
>>>>>having no bubbles and no internal voids.
>>>>>JUMA Sonderanlagenbau GmbH at D - 73479 Ellwangen,
>>>>>Germany, is an innovative
>>>>>enterprise which particularly develops and manufactures
>>>>>Rapid Prototyping
>>>>>Systems and modern machines and systems (reaction resin
>>>>>machines, silicone and
>>>>>PU-dosing pumps and complete plants for vacuum casting of
>>>>>plastic and metal
>>>>>parts) for industrial model and prototype shops.
>>>>>For further information just call me or visit us at
>>>>>EuroMold, 3.-6.12.2003,
>>>>>Frankfurt, Germany, HALL 9.0, BOOTH A.67
>>>>>Peter Hagen
>>>>>JUMA Sonderanlagenbau GmbH
>>>>>Roehlinger Strasse 15
>>>>>D-73479 Ellwangen
>>>>>Tel.: +49(0)7961-5662-37 Fax: -38

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