From: Valter E. Beal (beal@cimject.ufsc.br)
Date: Thu Oct 09 2003 - 19:34:20 EEST
Hi Brugnolli,
Bubbles are very problematic with 5260. A good and old method is to reduce platform speeds, especially when a clean platform is
dived in the vat machine. Too many fine-point supports also contribute to make bubbles. Avoid unnecessary supports.
Other necessary thing is to increase resin temperature to 30-32oC. It helps to decrease the viscosity so tinny bubbles will
disappear easily.
I have also noticed that thin walls may trap bubbles (probably happens with thicker walls to but we can not see them). I have
successfully overcome this problem changing parts orientation to not perpendicular/parallel X or Y axis in the building platform.
I hope you get ride of the bubbles.
Regards,
valter
_____________________________________________
Valter E. Beal, M.Eng.
Universidade Federal de Santa Catarina
CIMJECT - Laboratório de Projeto e Fabricação
de Componentes de Plástico Injetados
Florianópolis - SC - BRASIL
http://www.cimject.ufsc.br
E-mail: beal@cimject.ufsc.br
Phone: +55 48 331 9387 ext. 225
Mobile: +55 48 9113 9204
MSN Messenger: valter_beal@hotmail.com
_____________________________________________
----- Original Message -----
From: "Marco Brugnolli" <brugnolli@promau.com>
To: <rp-ml@rapid.lpt.fi>
Cc: <rweil@rpparts.com>; <robert.s.gansen@jci.com>
Sent: Thursday, October 09, 2003 10:34 AM
Subject: SL7560 and SL5260
Dear List
We have installed the resin SL7560 on a SLA 3500 (and SL5260 on a SLA 250)
but we have some problems with bubbles.
Have anyone this problem too, and any solution ?
Thanks
Brugnolli Marco
Ufficio Tecnico
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Promau Group - Trento
Engineering, Rapid Prototyping & Tooling
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Info line: +39.0461.955411; fax:+39.0461.955422
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