Hot Shot Oven & Kiln HS-18A Annealing Glass Kiln

This is a professional-grade annealing cabinet designed for serious glass artists and production studios that need fast, reliable, and consistent annealing performance. Its generous 18" × 18" × 18" chamber provides ample room for larger glass pieces or multiple projects, making it ideal for reducing internal stress and improving the long-term durability of finished work.

Powered by a robust 240V electrical system, the HS-18A can reach its maximum temperature of 1700°F in as little as 30 minutes, allowing artists to move projects through production quickly while maintaining precise temperature control. The kiln's stainless steel and ceramic-core construction, combined with Hot Shot's Cool-Touch Technology, keeps exterior surfaces remarkably cool during operation for a safer working environment.

Key Features

18" × 18" × 18" Interior Chamber
Provides generous capacity for annealing larger glass pieces or multiple projects in a single firing.

Fast Heat-Up Performance
Capable of reaching temperatures up to 1700°F in as little as 30 minutes, helping reduce production time without sacrificing consistency.

Cool-Touch Cabinet Design
Heavy-duty stainless steel and ceramic-core construction with powder-coated exterior keeps outside surfaces cool for improved operator safety.

Even Heat Distribution
Designed specifically for annealing applications, delivering uniform temperatures throughout the chamber to minimize stress and improve finished glass quality.

Included Mobile Stand
Ships complete with a sturdy stand, making it easy to position the kiln at a comfortable working height.

Controller Options

The HS-18A comes standard with the SPARK touchscreen controller, providing an intuitive interface for programming and monitoring annealing cycles.

For artists who need expanded programming capabilities, the kiln can be upgraded to the TAP controller, offering a larger display and additional firing controls.

Specifications

• Interior: 18" D × 18" W × 18" H
• Exterior: 31" D × 33" W × 28" H (without stand)
• Maximum Temperature: 1700°F (927°C)
• Power: 240V, 28 AMP (30 AMP circuit required)
• Cord Length: 12 ft
• Weight: 196 lbs. (260 lbs. with stand)
• Stand: Included

The Hot Shot HS-18A is an excellent choice for glass artists and production studios looking for a spacious, high-performance annealing kiln that combines rapid heat-up times, dependable temperature uniformity, and a safe, cool-touch design.

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