Polariscope COE Test Card

$12.00
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Polariscope COE Test Card. All you nees to do is sandwich your fused glass piece between the backlit fims. You can use a bright flashlight. If you don't see a halo the glass is compatible, if you see a halo it signals stress in the glass and incompatibility.

Unit of Measure: EA

EA
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SKU: COETESTCARD
Categories: Polariscopes
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5.0
Rated 5.0 out of 5 stars
1 Review
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EA
5.0
Rated 5.0 out of 5 stars
Based on 1 review
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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1 review
  • JP
    Jeff P.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 days ago
    Really works very well, and a great teaching tool!

    This Polariscope COE Test Card is very easy to use and works very well. I have given it to the instructor of a glass fusing class I am taking at a community college. It has been used to observe the results of glass fusing issues or problems with different types of COE-type glass after a kiln firing. The students now have a better understanding of the importance of using the same COE-type glass. They now know how important it is to make sure to use the same COE-type glass to allow a perfect outcome from the kiln

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