Thingiverse
Total Internal Reflection test block
by Thingiverse
Last crawled date: 4 years, 2 months ago
I created this simple test block as a test to measure and confirm total internal reflection in a clear print.
For my resin print, the print should be coated with a layer of resin after printing, drip-dried, then cured to achieve a glassy finish.
Faces for testing:
-The semicircle at the bottom allows radial light to hit the circle's centre (on the vertical flat surface) at any angle and test for the critical angle.
-Viewing from the vertical flat side, one can observe bright reflections from the semicircular surface. The slanted flat surface can be used as a mirror, reflecting light normal to the bottom out from the vertical flat surface and vice versa.
-Viewing straight into the slanted flat surface, the bottom and vertical surface act as the mirror and would reflect light normal and into the slanted surface back out.
Background:
Initially I noticed that post processing of clear resin prints can bring out a glass-like finish and upon observing total internal reflection in one such print, I decided that I must check the critical angle of my resin and is excited to test what I can potentially achieve with this discovery
For my resin print, the print should be coated with a layer of resin after printing, drip-dried, then cured to achieve a glassy finish.
Faces for testing:
-The semicircle at the bottom allows radial light to hit the circle's centre (on the vertical flat surface) at any angle and test for the critical angle.
-Viewing from the vertical flat side, one can observe bright reflections from the semicircular surface. The slanted flat surface can be used as a mirror, reflecting light normal to the bottom out from the vertical flat surface and vice versa.
-Viewing straight into the slanted flat surface, the bottom and vertical surface act as the mirror and would reflect light normal and into the slanted surface back out.
Background:
Initially I noticed that post processing of clear resin prints can bring out a glass-like finish and upon observing total internal reflection in one such print, I decided that I must check the critical angle of my resin and is excited to test what I can potentially achieve with this discovery
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