Re: SLA safety (was: I want to move this discussion to a wider audien ce)

From: wayne l foss (
Date: Thu Jul 02 1998 - 18:55:30 EEST

Bauer Juergen wrote:

> For me it was normal; we just had our SLA in a separate room, with a
> large suction hood over the top of the machine, pulling out all
> "disadvantageous fumes" 24 hours a day. We had an eye washer in the
> room, and we did all the handling with white coats and with gloves put
> on. Me, my colleagues and my students were used to it, as we knew that
> free radicals of uncured acrylic resins could cause strong allergic
> reaction. We had the second SLA installation in Europe, so we had to be
> careful.

I can fully understand this as I had worked in a R&D chem lab for a
battery manufacturer many, many years ago. Back then, we had the full
complement of lab safety equipment including a so called expolsion proof
room with spring loaded trap door in the ceiling and reinforced walls.
We always knew what the dangers were and how to protect ourselves from

However, I think that many (most?) SLA installations are in mechanical
engineering oriented departments. They are not familiar with chemical
handling and their mindset is geared towards installation of machine
tools. Therefore, because of their culture and experiences, much of the
SLA hazards are overlooked.

> The whole things around our SLA had cost about 30k ten years ago ...

WOW!!! I could never get that through my management.


- Wayne L. Foss
- Engineering Services Phone 319/295-2631
- Rapid Prototyping Specialist FAX 319/295-5429
- MS 106-176
- Rockwell Collins, Inc.
- 400 Collins Road, NE
- Cedar Rapids, IA 52498-3161
DISCLAIMER: Unless otherwise indicated, this correspondence is personal
opinion and NOT an official statement of Rockwell Collins, Inc.

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