Slumpy's is a leading supplier of glass slumping and fusing molds. As a designer and producer of cera
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4.4/5 · 252 reviews
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Aug 27, 2020
I am a lampworker and have lots of experience dealing with glass suppliers. This was the worst experience dealing with an glass supplier ever. We didnt have a large enough order for free shipping. Si…Full review by Michael Howell
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