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.

This kiln comes standard with the Genesis Spark controller. 

The SDS TAP II Controller is an upgrade option.

***Extended lead time of 7-10 business days***

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Choose the voltage that matches the electrical service where the kiln will be installed. Some kilns are available in only one voltage, while others can be ordered in multiple voltages. If both 120V and 240V are available, 240V is generally the preferred choice because it places less demand on your electrical system, while 120V offers the convenience of operating on a dedicated standard household circuit. If both 208V and 240V are available, select the voltage that matches your building's electrical service—240V is most common in homes, while 208V is common in many commercial, educational, and institutional buildings. If you're unsure which voltage you have, confirm it with your electrician before ordering.

Your kiln must be built to match the electrical service where it will be installed. Choose single-phase if that's what your building has (almost all homes do). Choose three-phase only if your building has three-phase power available. If both are available, three-phase is generally the preferred option. If you're unsure, verify the available electrical service with your electrician before placing your order.

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.)