OFFNOVA Sublimation Oven Machine User Manual

1. Introduction

Thank you for choosing the OFFNOVA Sublimation Oven Machine. This 20L convection oven is designed for efficient sublimation printing on various blanks, including mugs, tumblers, cups, and water bottles. Its advanced features ensure consistent heat distribution and ease of use for both beginners and experienced crafters.

This manual provides detailed instructions for the safe and effective operation, maintenance, and troubleshooting of your sublimation oven. Please read it thoroughly before first use and keep it for future reference.

The OFFNOVA Sublimation Oven Machine and its accompanying accessories.

2. Safety Instructions

WARNING: To reduce the risk of fire, electric shock, or injury, always follow these basic safety precautions.

• Read all instructions before using the appliance.
• Do not touch hot surfaces. Use handles or knobs. Always use oven mitts or the provided silicone glove when handling hot items or parts.
• To protect against electrical shock, do not immerse cord, plugs, or appliance in water or other liquid.
• Close supervision is necessary when any appliance is used by or near children.
• Unplug from outlet when not in use and before cleaning. Allow to cool before putting on or taking off parts.
• Do not operate any appliance with a damaged cord or plug or after the appliance malfunctions or has been damaged in any manner.
• The use of accessory attachments not recommended by the appliance manufacturer may cause injuries.
• Do not use outdoors.
• Do not let cord hang over edge of table or counter or touch hot surfaces.
• Do not place on or near a hot gas or electric burner, or in a heated oven.
• Extreme caution must be used when moving an appliance containing hot oil or other hot liquids.
• Do not use appliance for other than intended use.
• Ensure the oven is empty before starting any operation.
• DO NOT put items directly on the oven floor. Always place items on the provided rack for sublimation transfers.

3. Product Overview

3.1 Components Included

• Sublimation Oven x 1
• Rack x 1
• Shrink Sheet x 5
• Silicone Glove x 1

The OFFNOVA Sublimation Oven Machine and its accompanying accessories.

3.2 Key Features

• One-Touch Printing: Features a convenient Mode Button with a default setting of 365°F for 15 minutes, ideal for most tumblers. Customizable time and temperature settings are also available.
• Smart Preheat Alert: An innovative preheat reminder with a countdown function notifies you when the oven reaches the ideal temperature for placing tumblers.
• Efficient 3D Heating & Dynamic Temperature Balance: A hidden heating unit behind a porous rear air dam and a high-speed motor (up to 2000 RPM) ensure even and thorough 3D heating. An NTC temperature sensor and advanced algorithms maintain a steady, optimal temperature.
• Ideal for Small Batch Printing: Perfect for sublimating specific sizes of tumblers using shrink wrap, accommodating up to four ceramic mugs, skinny tumblers, or two large 40-oz tumblers at once without rotation.
• Enhanced User Experience: Teflon-coated interior for easy cleaning and rust resistance. Quiet operation for a better workspace.

The oven utilizes 3D heating for consistent temperature distribution.

The oven's capacity allows for bulk sublimation printing of various items.

Comparison of the OFFNOVA Sublimation Oven with other sublimation methods.

4. Setup

1. Unpack: Carefully remove the sublimation oven and all accessories from the packaging. Retain packaging for future storage or transport.
2. Placement: Place the oven on a stable, flat, heat-resistant surface. Ensure there is adequate clearance (at least 6 inches) on all sides for proper ventilation. Do not place it near flammable materials.
3. Power Connection: Plug the power cord into a grounded electrical outlet. Ensure the voltage matches the appliance's requirements (110V).
4. Initial Cleaning: Before first use, wipe the interior with a damp cloth to remove any manufacturing residues.

5. Operating Instructions

Follow these steps for successful sublimation printing with your OFFNOVA oven:

5.1 Preparing Your Blank

1. Design Preparation: Print your sublimation design onto sublimation paper using sublimation ink. Ensure the design is mirrored if necessary.
2. Wrap the Blank: Carefully wrap your printed sublimation paper around the blank (e.g., tumbler, mug). Ensure the paper is taut and covers the desired area. For tumblers with handles, the upper and lower cup bodies may need to be wrapped separately.
3. Secure with Tape: Use heat-resistant tape to secure the sublimation paper firmly to the blank, especially along seams and edges, to prevent ghosting.
4. Apply Shrink Wrap (Optional): For best results, especially with tumblers, place the wrapped blank inside a shrink wrap and use a heat gun to shrink it tightly around the blank.

Wrapping a tumbler with sublimation paper and securing it with tape.

Visual guide for preparing your tumbler for sublimation.

5.2 Oven Operation

1. Power On: Press the power button to turn on the oven.
2. Set Temperature and Time:
   • One-Touch Mode: Press the Mode Button for the default setting of 365°F (185°C) for 15 minutes. This is suitable for most tumblers.
   • Custom Settings: Use the control knob to adjust the temperature (140-395°F / 60-200°C) and time (1-30 minutes) according to your blank's specific requirements. Refer to the blank manufacturer's recommendations.
3. Preheat: The oven will begin preheating. The Smart Preheat Alert feature will notify you with a countdown when the ideal temperature is reached.


The oven indicates when preheating is complete and it's time to place your items.

4. Place Blank in Oven: Once preheated, carefully open the oven door. Using the provided silicone glove, place the prepared blank onto the oven rack. Ensure it is stable and not touching the heating elements or oven walls.
5. Start Sublimation: Close the oven door. Press the countdown button to start the sublimation process. The oven will maintain the set temperature and time.


Initiating the sublimation process after placing the blank inside.

6. Monitoring: The oven will count down the remaining time. You can observe the process through the tempered glass door.
7. Completion: Once the timer finishes, the oven will alert you. Carefully open the door and, using the silicone glove, remove the hot blank from the oven.
8. Cooling and Peeling: Allow the blank to cool completely before peeling off the sublimation paper and heat-resistant tape. This prevents ghosting and ensures vibrant results.

5.3 Sublimation Example: 40oz Tumbler

Here's a video demonstrating the sublimation process for a 40oz tumbler using the OFFNOVA oven:

Example recommended settings for a tumbler: 100 seconds at 356°F (180°C).

6. Maintenance and Cleaning

Regular cleaning and maintenance will ensure the longevity and optimal performance of your OFFNOVA Sublimation Oven.

• Unplug Before Cleaning: Always unplug the oven from the power outlet and allow it to cool completely before cleaning.
• Interior Cleaning: The Teflon-coated interior is designed for easy cleaning. Wipe down the interior surfaces with a damp cloth and mild detergent. Avoid abrasive cleaners or scouring pads that could damage the non-stick coating.
• Exterior Cleaning: Wipe the exterior surfaces with a soft, damp cloth. Do not use harsh chemicals or abrasive materials.
• Rack Cleaning: The removable rack can be washed with warm, soapy water. Ensure it is completely dry before placing it back in the oven.
• Storage: When not in use, store the oven in a clean, dry place away from direct sunlight and extreme temperatures.

The Teflon-coated interior allows for easy cleaning.

7. Troubleshooting

If you encounter issues with your OFFNOVA Sublimation Oven, refer to the following common problems and solutions:

If the problem persists after attempting these solutions, please contact OFFNOVA customer support for further assistance.

8. Specifications

Dimensions and capacity overview of the sublimation oven.

9. Warranty and Support

The OFFNOVA Sublimation Oven Machine comes with a One-Year Warranty from the date of purchase, covering manufacturing defects under normal use.

For warranty claims, technical support, or any questions not covered in this manual, please contact OFFNOVA customer support through the retailer's platform or the official OFFNOVA website. Please have your model number (SUB20) and purchase information ready when contacting support.