Slumpy's

Finish the sentence: You know you’re a glass artist when __________.

💜 OH SHEET! Save 15% off Sheet Glass! 💜

Time to stock that glass stash! September 23–24, save 15% OFF sheet glass and fill your studio with fresh colors for all the projects ahead. ✨

No promo code required—just shop, save, and start dreaming up your next creation!


✨ Offer ends midnight EST. Order $450 after all discounts have been applied in order to receive free shipping with the contiguous USA. Some exclusions apply and may not be combined with other offers. ✨

Slumpy's - The Glass Mold Company Welcome to Slumpy's, the Glass Mold Company. More than just offering glass slump molds, we offer warm glass, glass tools, and warm glass supplies.

Your glass stash called. It says you definitely need more glass. 🤭 Who can relate?

Hey friends! 👋 Just a heads up, our website will be down for maintenance tomorrow, September 22, from 3am - 7am EST. Please note, you will be unable to place orders during this time. Thank you for understanding! 💛

🚨 LAST DAY to score 75% OFF Bargain Basement finds! 🚨

Consider this your final call to do a little bargain hunting! 👀 Stock up on discounted glass studio goodies for all those cozy, creative days ahead. 🍂🧣

Shop 75% OFF Bargain Basement items TODAY, September 20—no promo code needed. But hurry… once they’re gone, they’re gone! 🛒✨


✨ Offer ends midnight EST. Order $450 after all discounts have been applied in order to receive free shipping within the contiguous USA. Some exclusions apply and may not be combined with other offers. ✨

Sweater weather is coming… and so are some seriously cozy 75% off savings! 🍂

Get your glass studio ready for a season of creating with 75% OFF Bargain Basement items September 18–20! From hidden gems to studio must-haves, it’s the perfect excuse to hunt for a deal and stock up for those cozy days spent creating indoors.

No promo code needed, but don’t wait—these bargains are only available while supplies last! 🛒✨

Featured Mold: SM-9405 Hanna Platter Mold


✨ Offer ends midnight EST. Order $450 after all discounts have been applied in order to receive free shipping within the contiguous USA. Some exclusions apply and may not be combined with other offers. ✨

Be honest… how big is your glass scrap collection right now? 😂

✨ Shine up your mold collection with 25% off!

For September 14–15, save 25% off stainless steel molds at Slumpy's. Whether you’re adding new shapes to your lineup or stocking up on tried-and-true favorites, it’s a great time to expand the possibilities in your glass studio!

Featured: SS-776 Nevada Swoop

Don’t let these stainless savings slip away! ✨


✨ Offer ends midnight EST. Order $450 after all discounts have been applied in order to receive free shipping within the contiguous USA. Some exclusions apply and may not be combined with other offers. ✨

Slumpy's

Today, we remember and honor the lives lost on September 11, 2001, and the bravery of the heroes who stepped forward. We will never forget. ❤️💙