Hot Shot Oven & Kiln HS-18G Glass Kiln

The Hot Shot HS-18G Glass Kiln is a versatile, mid-size glass kiln designed for both home studios and professional workspaces. Its spacious 18" × 18" × 10" chamber gives artists the room needed for slumping, draping, casting, annealing, and fusing, allowing you to create larger pieces or fire multiple projects at once.

The kiln features a front-opening clamshell design, providing full access to the kiln floor for easy loading and unloading. This design also allows artists to interact with projects mid-firing for techniques such as glass raking.

Key Features

Spacious 18" × 18" × 10" Interior
Provides ample room for larger glass projects or firing multiple pieces simultaneously.

Clamshell Opening Design
Front-opening lid gives full access to the kiln floor, simplifying loading and allowing mid-fire techniques.

Easy-Lift Struts
Heavy-duty lift struts allow the kiln lid to open and close smoothly with minimal effort.

100% Removable Floor
Prepare projects comfortably at your workbench and place the kiln body over the work for easier setup.

Quartz-Encased Heating Elements
Heating elements are enclosed in quartz tubes to prevent element flakes from falling onto glass.

Controller Options

The HS-18G comes standard with the SPARK touchscreen controller, offering an intuitive interface for programming and monitoring firings.

For artists who want expanded programming capabilities, the kiln can be upgraded to the TAP controller, which provides a larger display and advanced firing controls.

Specifications

• Interior: 18" D × 18" W × 10" H

• Exterior: 32" L × 32" W × 21" H (without stand)

• Maximum Temperature: 1700°F

• Power: 240V, 20 AMP

• Stand: Included

The HS-18G is an excellent step-up kiln for glass artists who want more workspace, reliable performance, and the flexibility to grow their creative possibilities.

Ready-to-ship. Typically next business. Rarely beyond 3 business days.

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Higher voltage means lower amperage draw and greater efficiency, which can save money long term. 240V and 208V cost the same—most home studios use 240V, while 208V is common in schools or large facilities. Amperage refers to the amount of electrical current a kiln draws—higher amps require heavier wiring and breakers.

Single-phase is what almost all homes have. If your facility has three-phase, you can choose either—but three-phase is typically the better long-term option due to smoother power and improved efficiency.

Mechanical relays are standard and reliable. Solid-state relays (SSR) offer silent operation, faster cycling, greater precision, and longer lifespan—ideal for frequent or high-accuracy firings.

The following controllers are used across kilns sold by Pottery Pulse. Not all models offer every option—available controllers are listed on each product page. Some kilns include only the standard controller, while most allow upgrades for added precision and convenience.

Olympic Kilns

• Infinite Switch – Manual dial control for simple heat adjustments.
• KilnStar – Digital controller with preset and user-defined programs.
• Genesis – Advanced touchscreen interface with Wi-Fi and data logging.

Evenheat Kilns

• Icon – Digital 3-button controller for straightforward firing.
• RampMaster II – Manual digital controller for ceramic kilns; flexible ramp/hold programming.
• RampMaster 3 – Updated version for glass kilns with refined interface.
• Icon+ – Enhanced digital control with expanded profiles and precision.
• TAP II – Smart touchscreen controller with Wi-Fi, data tracking, and remote access.

Hot Shot Kilns

• Novus – “Set & Go” controller: set a target temperature and it does the rest (no segments).
• Spark – Entry-level touchscreen controller with intuitive operation and limited program control.
• TAP II – Smart touchscreen controller with Wi-Fi and real-time monitoring.

Jen-Ken Kilns

• Orton AF3P 3-Button – Reliable and straightforward for basic firing.
• Orton AutoFire 4000 12-Key – Expanded program capacity and fine control.
• Orton AutoFire Slide Touchscreen – Modern, responsive touchscreen interface.
• TAP II Touchscreen Smart Controller – Wi-Fi connectivity and real-time data tracking.

Not all kilns can use a collar, but Olympic’s Hot Box kilns can be ordered with a collar to expand versatility. A blank collar simply adds height to the firing chamber, while a bead collar adds the same height and includes a built-in bead or annealing door for quick-access lampwork projects.

This safety feature automatically cuts power to the heating elements whenever the kiln lid or door is opened. It prevents accidental burns, protects elements, and resumes power only when safely closed. (Also called an automatic lid shutoff on Olympic kilns.)