Rodrigo,
ABS is not porous. The observed porosity is due to the face that FDM does
not produce 100% dense parts. Hence the strength of FDM produced parts is
less than that of their injection molded equivilents.
-Brian
Brian VanHiel
Mechanical Engineer
Nordson Corporation
(770) 497-3637
-----Original Message-----
From: Rodrigo Pedron [mailto:Rodrigo.Pedron@unilever.com]
Sent: Monday, September 27, 1999 2:47 PM
To: AHastbacka@aol.com; rp-ml@bart.lpt.fi
Subject: RE: FDM for Vacuum Forming
Dear Al,
The porosity in FDM generated ABS parts is not related to gaps in
layer to
layer adhesion since that can be controlled through QuickSlice software.
Its related to the inherent porosity of ABS plastic.
Best regards,
Rodrigo.
Rodrigo Pedron
IMC Customer Manager
UNILEVER LATIN AMERICA
voice 55 11 3741-2063
fax 55 11 3741-1049
e-mail rodrigo.pedron@unilever.com
-----Original Message-----
From: AHastbacka@aol.com [SMTP:AHastbacka@aol.com]
Sent: Monday, September 27, 1999 9:53 AM
To: rp-ml@bart.lpt.fi
Subject: FDM for Vacuum Forming
I am somewhat confused by the comments from several list members who have
stated that FDM ABS parts are great for vacuum forming because of the
inherent porosity. I assume the porosity comes about because of gaps in the
layer to layer adhesion.
If the parts are inherently porous, how can it be that FDM ABS parts have
nearly the same mechanical properties as injection molded ABS?
Regards,
Al Hastbacka
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