We research products independently. When you buy through links on this page, we may earn a commission from Amazon at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. Learn more.
You can do sublimation on acrylic, but only on acrylic made for sublimation. Sublimation acrylic blanks carry a coating, usually backed by a white layer, that the dye bonds to. Plain clear acrylic from a hardware store has no coating, so the dye won't bond properly. Settings vary widely by blank, from about 360°F for under 2 minutes on thin sheets to 410–420°F for about 4 minutes on thick standing blocks, and many acrylic blanks are pressed through the back with mirroring turned off.
Why acrylic needs a coating
Sublimation dye bonds with polyester and polymer coatings. Acrylic (PMMA) isn't designed to take it, so makers add a sublimation coating to one side. Most blanks are built so you print onto the coated back, and the image is seen through the clear front, which gives the glossy, glass-like look acrylic is known for.
That design is why the mirroring rule flips. JP Plus's instructions for both its acrylic sheet and its self-standing rectangle say to turn image mirroring off.
Acrylic sublimation settings
| Acrylic blank | Temperature | Time | Pressure | Source |
|---|---|---|---|---|
| JP Plus Sublimation Cast Acrylic Sheet (SGC1220) | 360–365°F | 105 sec | Medium | JP Plus instruction sheet |
| JP Plus SubliPlex Acrylic Self Standing Rectangle (SP320, SP330) | 410–420°F | 225–240 sec (3:45–4:00) | Heavy; 75–80 PSI on a pneumatic press | JP Plus instruction sheet |
| Acrylic (generic starting point) | 375°F (190°C) | 60 sec | Medium | Sawgrass chart |
The spread between those rows is the lesson: a thin sheet and a thick block need very different settings. Always start from your blank maker's sheet; Sawgrass presents its chart only as a starting place. Our sublimation temperature chart lists other blanks.
How to sublimate an acrylic sheet
This follows JP Plus's instructions for its cast acrylic sheet, which is made to be sublimated first and laser cut afterward.
- Preheat the press to 360–365°F, 105 seconds, medium pressure. JP Plus recommends a swing-away press.
- Heat the bottom platen. Close the empty press for at least 3–5 minutes so the lower platen comes up to temperature.
- Print with mirroring off on sublimation paper. Make the print larger than your final cut shape so paper-edge crease lines fall outside it.
- Handle the masking. Leave the protective masking on the clear front (marked "Non-printable Side") and remove the masking on the back.
- Place the sheet white layer face-down onto the print and secure it with heat tape.
- Protect both sides. Put blowout paper or a Teflon sheet on the lower platen, lay the sheet and print on it with the transfer on top, and cover with another sheet.
- Press for the full time.
- Lift carefully. The acrylic is soft from the heat. Remove the transfer paper and discard it.
- Laser cut after it cools, if you're making shapes.
How to sublimate a thick acrylic block
JP Plus's self-standing rectangle shows what thicker acrylic needs:
- Preheat to 410–420°F for 225–240 seconds at heavy pressure (75–80 PSI on a pneumatic press).
- Print with mirroring off.
- Tape the blank face-down onto the printed transfer.
- Heat the bottom platen for at least 5 minutes with the press closed and empty, then readjust to heavy pressure. JP Plus says you may need to reheat the bottom platen every 1–2 blanks.
- Center the blank on the lower platen with the transfer on top, over blowout paper or Teflon.
- Add a green sponge heat pad on top of the transfer.
- Press, then remove with heat gloves and let it cool.
JP Plus also says not to add spacer blanks around the piece to balance the platen, because extra objects pull heat away from the acrylic.
Choosing a press for acrylic
Acrylic rewards a press that can hold heavy, even pressure and a hot lower platen. A swing-away press, which JP Plus recommends, lets you place thick blocks without the platen coming down at an angle. For home presses, an automatic press with adjustable pressure makes heavy settings repeatable.
Acrylic, glass and other clear blanks
Acrylic is lighter and less fragile than glass, which makes it popular for keychains, photo blocks, signs, sublimation ornaments and tumbler toppers. Glass gives a heavier, more premium feel but needs slower heating and cooling; see our sublimation on glass guide. For blanks you coat yourself, our sublimation coating spray guide covers which surfaces coatings are sold for. More pre-coated options are in our sublimation blanks guide.
Troubleshooting acrylic
| Problem | Likely cause | Fix |
|---|---|---|
| Faded or light image | Too little time, temperature or pressure; cold bottom platen | Preheat the bottom platen; raise time first |
| Dull colors | Too much time or temperature, or the wrong print profile | Lower time or temperature; check the paper setting and profile |
| Blurry image | Paper moved, light pressure | Tape firmly; raise pressure |
| Paper brown and stuck | Too hot, too long or too much pressure | Lower one variable; try a different paper |
| Blank sticks to the top platen | Vacuum effect on opening | Add a cover sheet on top, as JP Plus suggests |
| Warped piece | Overheating; handled while soft | Shorten time; lift carefully and cool flat |
| Reversed text | Mirroring on when it should be off | Check whether you press through the back |
Several of these fixes come straight from JP Plus's troubleshooting notes, which apply to most sublimation hard goods.
Popular acrylic sublimation projects
- Photo blocks and standing frames. Thick, self-standing rectangles like JP Plus's SubliPlex blocks make glossy desk photos.
- Keychains and bag tags. Small coated acrylic blanks press quickly; batch several on one platen with even spacing.
- Signs and door hangers. Acrylic sheets are sublimated first, then laser cut into shapes, as JP Plus directs for its cast sheet.
- Tumbler toppers and cake toppers. Thin acrylic pieces; press with care so they don't warp.
- Ornaments. A lighter, less breakable alternative to glass or ceramic ornaments.
Design tips for acrylic
Because many blanks are viewed through clear acrylic with a white layer behind the print, colors look glossy and saturated. A few tips help:
- Size past the cut line. JP Plus recommends making the transfer larger than the final shape so paper creases fall outside it.
- Mind the white layer. Where the blank has a white backing, white areas of your design show as that white. On clear areas with no backing, light colors may look faint.
- Check text direction. Print a plain-paper proof and hold it behind the acrylic to confirm the text reads correctly before you press.
- Use the blank's template. JP Plus publishes templates on its product pages for accurate placement.
Common mistakes
- Using uncoated acrylic. It won't take the dye properly.
- Mirroring by habit. Pressing through the back means mirroring off.
- Removing the wrong masking. Keep the front masking on during the press, as JP Plus directs.
- Skipping the bottom-platen preheat. Thick acrylic pulls heat from below.
- Touching it while hot. Soft acrylic bends and picks up marks.
FAQ
Can you sublimate on acrylic?
Yes, on acrylic made for sublimation. Sublimation acrylic blanks have a coating, often with a white backing layer, that the dye bonds to. Regular clear acrylic from a hardware store has no sublimation coating, so the dye won't bond properly.
What temperature do you sublimate acrylic at?
It depends a lot on the blank. JP Plus lists its Sublimation Cast Acrylic Sheet at 360–365°F for 105 seconds at medium pressure, and its thicker SubliPlex Self Standing Rectangle at 410–420°F for 225–240 seconds at heavy pressure. Sawgrass's generic chart starts acrylic at 375°F (190°C) for 60 seconds at medium pressure.
Do you mirror the image when sublimating acrylic?
Often not. When you press through the back of a clear acrylic blank so the image is viewed through the acrylic, JP Plus tells you to turn mirroring off. If you press onto a coated front surface that faces the viewer, mirror as usual. Follow the blank maker's sheet.
Why did my sublimation acrylic warp?
Acrylic softens at sublimation temperatures. JP Plus warns that its acrylic sheet is soft straight out of the press, so lift it carefully and let it cool flat. Too much time or heat, or uneven pressure, makes warping worse.
Can you use sublimation coating spray on acrylic?
Some coatings are sold for plastics, but results on acrylic vary and the heat can distort thin sheets. Pre-coated sublimation acrylic blanks are far more predictable; test any coating on scrap first.