Hi I am, about to buy a dedicated enamel kiln.  

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I am OK with the paragon price for quality.  Need the 120 volt 15 amp or less size.

Programable

What I want to know is if the $45USD add on door window works.  Does anyone have positive or negative experience using a quartz window equipped kiln, and if so can you see well enough to make enameling decisions like for example judging orange peel or fire polish gloss.

 Are those windows cleanable? If so with what? 

Also, is there a US supplier of enameling supplies that supports this forum or is more recommended?  

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Thanks,  Marty