Thread: ring tests
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Old 12-19-2016, 01:27 PM
Scott Benefield Scott Benefield is offline
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Or...

If you have a simple polariscope, you can get some information from a 'chip test' (similar to the way that fusers test colored sheet glass against a base clear). Get a small 1" square of relatively flat clear glass and fully fuse (flat fuse) a 3/8" chip of the color to be tested on top of it. The polariscope--or just two pieces of polarized lens material set perpendicular to one another on either face of the test--should show any mismatch as colored haloes. But that's about all it tells you.

You don't have to make sheet glass to do this, you can just blow a small thin rondel and do it all in one step.
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