To use the H17 Phone Case Heat Press, first unbox and inspect all accessories. Set the upper and lower plate temperatures according to the reference chart (typically 135℃/275℉ for phone cases). Preheat the fixture for at least 5 minutes, mount the phone case with the lens pad, place the sublimation film matte side down, and press for 300–350 seconds. Hot peel immediately after the indicator turns green.
Key Takeaways
The H17 Phone Case Heat Press includes multiple fixture sets for phone cases, badges, and flat items.
Preheat the fixture for at least 5 minutes before transferring for consistent results.
Always use the lens pad to prevent phone case deformation and avoid covering air holes.
Place the sublimation film matte side down and close the upper plate within 10 seconds.
Hot peel the sublimation film immediately after the indicator turns green.
Step 1. Unboxing of H17 Phone Case Heat Press
Start by unboxing the package and inspecting its contents. Check to ensure all accessories are included. If anything is missing, please take a photo and contact our customer service immediately for assistance.
Step 2: Inspect the Device of the Phone Case Heat Press
Step 3. Read the Reference Chart of Phone Case Heat Press
Substrate
Material
Tool
Upper Heat Plate Temp
Lower Heat Plate Temp
Preheat Time
Transfer Time
Peeling Method
Phone Case
TPU/PC
Phone case fixture set
135℃/275℉
135℃/275℉
2-10s
300-350s
Hot Peel
Badge
Metal
Badge fixture set
140℃/285℉
140℃/285℉
2-10s
330s
Hot Peel
Ceramic Plate
Ceramic
Base plate
140℃/285℉
140℃/285℉
2-10s
300s
Hot Peel
Coaster
Leather
Base plate
135℃/275℉
125℃/255℉
2-10s
300s
Hot Peel
Keychain
MDF
Base plate
135℃/275℉
135℃/275℉
2-10s
300s
Hot Peel
Slate Coaster
Stone
Base plate
140℃/285℉
140℃/285℉
2-10s
300s
Hot Peel
Sublimation Pen
Aluminum Alloy
Base plate
160℃/320℉
160℃/320℉
/
300s
Hot Peel
Shrink Plastic Sheet
/
Base plate
160℃/320℉
160℃/320℉
/
60s
/
Important Notes:
Preheat the film for 5 seconds to soften it and achieve better transfer quality.
Please use the sublimation paper and the shrink plastic sheet when heat transferring the sublimation pen.
When heat-shrinking film sheets, place a heat-resistant silicone mat under the base plate to prevent sticking and ensure a smoother, more even finish.
The Preheat Time in this table refers to the time required to heat the sublimation film. The "preheating" mentioned in Step 5 is intended to ensure that the phone case fixture has sufficient heat, allowing the sublimation process to achieve uniform heating on both the upper and lower layers.
Most Common Settings
Phone Case (TPU/PC): 135℃/275℉, 300–350s, Hot Peel
Badge (Metal): 140℃/285℉, 330s, Hot Peel
Coaster (Leather): Upper 135℃/275℉, Lower 125℃/255℉, 300s, Hot Peel
Step 4. Power On and Set the Device
Power on the device, set the temperature and time, then wait for heating.
Yellow: Set Upper Heat Plate Temp
Red: Set Lower Heat Plate Temp
Yellow: Set Preheat Time
Red: Set Heat Transfer Time
Step 5. Place the Fixture in the Heating Chamber
Place the fixture in the heating chamber and close the upper heat plate for preheating for at least 5 minutes (use support for larger phone cases).
*It is normal for the fixture to appear to have slight movement after placement.
Step 6. Place the Phone Case and Your Sublimation Design
Stick the lens pad inside the phone case, then mount it onto the fixture by pressing firmly towards the lower-left.
Make sure to wipe the phone case clean before ironing.
Make sure the lens pad is used to prevent the phone case from deformation.
When placing the lens pad, avoid covering the air holes.
Step 7. Place Your Sublimation Design
Place the sublimation film flat with the matte side down, ensuring the film’s edge fully covers the silicone, then close the plate.
The device will beep once the upper heat plate is lifted up or closed.
Please place the film and close the upper heat plate within 10 seconds.
Step 8. Short-Press the Start Button
Once the set temperature is reached, short-press the Start button to begin vacuum sealing and heat transfer.
Warning: Do not open the lid or press any buttons during the process.
Step 9. Hot Peel Sublimation Film When the Heat Transfer Is Complete
When the red light turns green, the ironing is done. Then wear heat-resistant gloves to open the heat plate and peel off the sublimation film while hot. Remove the phone case from the fixture.
Note: For heat-pressing badges, use the badge fixture set and the base plate. For flat materials such as coasters or ceramic tiles, use the base plate.
Common Mistakes to Avoid
Faded print: Increase temperature or preheat time, and ensure the sublimation film is placed matte side down.
Phone case deformation: Always use the lens pad and avoid covering air holes.
Film sticking to the plate: Use a heat-resistant silicone mat under the base plate when working with shrink plastic sheets.
Uneven transfer: Make sure the fixture is preheated for at least 5 minutes and the phone case is firmly pressed onto the fixture.
FAQ
What temperature should I use for phone case sublimation?
For TPU/PC phone cases, set both the upper and lower heat plates to 135℃ (275℉) and press for 300–350 seconds. Always refer to the reference chart for other substrates.
How long does it take to press a phone case?
Phone cases typically require 300–350 seconds of transfer time. This does not include the 5-minute fixture preheating step.
Can I sublimate any phone case with the H17?
The H17 works best with blank phone cases that have a sublimation coating on TPU/PC material. Uncoated or non-sublimatable cases will not produce good results.
Do I need to preheat the fixture?
Yes. Preheating the fixture for at least 5 minutes ensures uniform heat distribution and prevents incomplete transfers.
Why does my phone case deform during pressing?
Deformation usually occurs when the lens pad is not used or air holes are covered. Always insert the lens pad and ensure air holes remain clear.
