Beth
I have not done any studies besides just observing how parts clean. I use
SL5170. I had some parts with many different size holes/tunnels zigzagging
(many feet long) inside the part. I was able to force compressed air 110psi
in the part to evacuate the resin. Sometimes it took over an hour for the
air to push the resin out. After that I put alcohol in a Windex type squirt
bottle and shot that into the part. I repeated this process till all the
resin was out of the part. I used a rubber fitting on the air gun to get a
good seal between the part and the airgun.
Cheers
Scooter
----- Original Message -----
From: <Beth_P_Israelnaim@bd.com>
To: <rp-ml@bart.lpt.fi>
Sent: Wednesday, January 05, 2000 12:35 PM
Subject: Aspect ratios for holes in SLA
>
>
> Dear RPML Friends,
>
> I am currently building some small parts with small diameter holes and
have run
> into somewhat of a problem cleaning the liquid resin out of these holes as
the
> length of these holes get longer. This problem has lead me to wonder two
> things:
>
> 1. How small of a hole are other users able to build on their SLA's and
on that
> smallest diameter hole you can build, what is the length of the span that
the
> hole can travel and still be cleaned out. What SLA system are you using
and
> what resin are you building with?
>
> 2. Has any University or Consortium project evaluated the different
systems and
> their resins/powers to see what aspect ratios can be achieved with the
different
> resins/powders and their viscosity's and or particle size?
>
> Thank you in advance for any information you can share. If there appears
to be
> enough interest I will tabulate and share the results with the RPML.
>
>
> Beth Israelnaim
> RP Specialist
> BD Technologies
> P.O. Box 12016
> RTP, NC 27709
> 919.990.2153
>
> bisraeln@bd.com
>
>
>
>
>
> For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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