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Hot Shot Clam Shell Glass Kiln HS-18G

SKU HS-18G
Save $479.80
Original Price $4,798.00
Current Price $4,318.20
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Not sure this is the right fit? Power, size, firing needs: talk it through with a real person before you order. Call or text (470) 264-3563

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✓ No sales tax outside GA ✓ Quoted at checkout ✓ Authorized dealer
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In Stock: In stock and ready to ship. Most orders are delivered within 5–7 business days.
  1. 1 We submit your kiln order for production with the manufacturer.
  2. 2 We confirm the current estimated lead time and keep you updated.
  3. 3 Your kiln is built to your specifications and prepared for freight shipment.
  4. 4 We send tracking and delivery instructions once your kiln ships.
Hot Shot · Glass Kiln · Front-Loading Clamshell Hot Shot HS-18G Clamshell Glass Kiln Model HS-18G · 240 Volt · 18″ L × 18″ W × 10″ H · 1.9 cu ft · Fires to 1700°F The Hot Shot HS-18G is a front-loading clamshell glass kiln built for fusing, slumping, and annealing with an 18″ × 18″ shelf footprint and 10″ of interior height. Solid state relay comes standard for precise temperature control throughout long glass firing cycles. The clamshell design allows easy loading from the front and full top access for large or awkward pieces.
Max temperature1700°F
Interior dimensions18″ L × 18″ W × 10″ H
Power requirement240V / 20A / NEMA 6-20
DesignFront-loading clamshell
Optional accessories
Kiln shelf and posts 17″ × 17″ kiln shelf (Hot Shot’s size for the 18G) with kiln posts; additional shelves allow stacking multiple layers for production work
Fiber paper High-temperature ceramic fiber paper prevents glass adhesion to kiln shelves during fusing and slumping
Kiln wash Shelf coating that protects kiln shelves from molten glass; reapply between firings as needed
Slumping molds Stainless steel or ceramic molds in various shapes for forming bowls, plates, and sculptural forms
Fusing supplies kit Includes separator, dam material, and tools for professional glass fusing results
Replacement thermocouple Type K thermocouple; keep a spare on hand to avoid downtime if the original fails
Element set Full replacement element set for HS-18G; elements typically last 100–200 firings depending on use
Power interrupt system Automatically shuts off kiln power if temperature exceeds programmed setpoint; added safety for unattended firings
Controller option
Genesis Spark Touchscreen — Bartlett InstrumentsRecommended
Hot Shot builds the HS-18G with your choice of the TAP II touchscreen (unlimited programs) or Bartlett’s Genesis Spark touchscreen. The Spark stores 30 custom programs for annealing, fusing, and slumping cycles that require precise ramp rates and extended hold times.
  • Full-color touchscreen with Wi-Fi
  • Presets per industry plus 30 custom programs
  • Remote monitoring and firing alerts through the Bartlett Kiln Aid app
  • Built-in diagnostics and maintenance logging
  • Automatically adjusting PID temperature control
  • Software updates over Wi-Fi
Common questions
What types of glass work can I do in the HS-18G?
The HS-18G fires to 1700°F, making it suitable for full fusing (1450–1500°F), tack fusing (1350–1425°F), slumping (1200–1350°F), and annealing. The 18″ × 18″ chamber takes Hot Shot’s 17″ × 17″ shelf, which accommodates large platters, bowls, decorative panels, and jewelry components. The 10″ interior height provides clearance for most slumping molds and stacked fusing projects. This kiln is not intended for float glass or lampworking; it's designed for kiln-formed glass techniques.
What are the advantages of the clamshell design over top-loading kilns?
The front-hinged clamshell lid opens toward you, allowing you to load glass from a work table at waist height without lifting pieces overhead. This reduces the risk of dropping expensive glass work and makes it easier to position elements precisely on the shelf. The fully-opening top provides complete access for placing large sheets, removing molds, or inspecting work mid-fire. Clamshell kilns are especially popular with artists working with full sheets of glass or heavy slumping molds.
Do I need an electrician to install this kiln?
Yes. The HS-18G requires a dedicated 240V, 20-amp circuit (typically 12 AWG copper wire). This is not a standard household circuit. A licensed electrician must install a new circuit from your breaker panel to the kiln location, terminating in a NEMA 6-20R receptacle for the kiln’s NEMA 6-20 plug. Do not attempt to run this kiln on an existing circuit or use an undersized wire gauge. Improper wiring creates a serious fire hazard and voids your warranty.
What's the difference between the HS-18G and other glass kilns in this size range?
The HS-18G includes a solid state relay as standard equipment, which many competitors charge extra for or omit entirely. SSR provides infinite power switching for smooth temperature control during critical annealing phases where precise cooling rates prevent stress fractures. The clamshell design is also less common than top-loaders in this size, offering easier loading access. Hot Shot kilns are built for technical users who prioritize control accuracy over price.
Is this kiln covered by warranty if I buy from Peach State Pottery?
Yes. Peach State Pottery is an authorized Hot Shot dealer, so your kiln is covered by the manufacturer's one-year limited warranty. You must register your kiln with Hot Shot within 30 days of delivery to activate coverage. Kilns purchased from unauthorized sellers or used kilns are not covered. Keep your proof of purchase and register promptly to protect your investment.
Not sure if the HS-18G is the right kiln for your studio? Our team can help you compare models, review electrical requirements, and confirm this kiln fits your glass work.
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Common questions about this kiln

Still stuck? Call or text (470) 264-3563 and talk it through with a real person.

Is freight delivery included in the price?

No. Kiln prices do not include freight, and we do not quietly build it into the product price. Freight is charged at a flat rate based on your delivery address and is shown at checkout. Liftgate service is included when it is needed, and standard delivery is curbside. You can estimate your delivered cost with the ZIP code tool above the Add to Cart button.

Can I return this kiln if it is not right?

Return requests can be submitted within 30 days of delivery. The kiln needs to be in its original packaging, in new and resellable condition, and approved before it is sent back. A restocking fee may apply. Completing the manufacturer's recommended first test firing does not by itself make a kiln non-returnable, so you can confirm it works before you commit. Full terms are on our Returns page.

What electrical supply do I need for this kiln?

The Specifications tab on this page lists this model's voltage, amperage, required breaker size and NEMA plug configuration. Most 240V kilns need their own dedicated circuit fitted by a licensed electrician, while many 120V models run from a standard household outlet. If you are unsure what your space can support, call or text (470) 264-3563 before ordering.

Does this kiln come with a warranty?

Yes. This kiln carries the HotShot Oven & Kiln manufacturer warranty. Coverage length, what is included and any registration deadline are listed in the Specifications tab on this page. We are an authorized HotShot Oven & Kiln dealer, which is a condition of warranty coverage on most kiln brands.

What comes with the kiln, and what do I need to buy separately?

The What's Included tab on this page lists exactly what ships with this kiln. Most kilns need shelves, posts and kiln wash before your first firing, and these are not always included. A vent is recommended for indoor installations. Any add-ons available for this model are shown above the Add to Cart button.

About this oven
Best for: Glass artists, jewelers, knife makers, and specialty craftspeople who need a compact, reliable specialty oven or kiln that heats up fast and fires accurately.
🔨 Lead time
5–7 business days
In stock and ready to ship. Most orders are processed within 1–2 business days and delivered within 5–7 business days.
✓ Warranty
Manufacturer warranty
Full coverage. We are here if anything goes wrong after delivery.
Why buy from Peach State Pottery?
★ Authorized HotShot Dealer
★ No sales tax outside Georgia
★ Flat-rate shipping, quoted at checkout
★ Real support before & after order
★ Military discount for veterans
★ We are here if anything goes wrong
Call or text us:✆ (470) 264-3563
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In stock and ready to ship
Order today and your oven could be at your door within the week. HotShot stock levels change without notice.