Aspect ratios for holes in SLA

Date: Wed Jan 05 2000 - 20:35:27 EET

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

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

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