What each xTool O1 Omni can print: materials, films, and primers

Saying that a UV printer “prints on almost anything” sounds good, but it is of little use when preparing a workshop. The useful question is different: which materials each version of the xTool O1 Omni supports, which require primer, what can be printed directly, and what requires a film or an accessory.

On August 12, 2026, xTool published its first complete matrix of materials, consumables, and workflows for the O1 Omni. This guide organizes it in English to help with purchasing decisions and consumables planning. We are still waiting for our Dual UV, so everything related to compatibility comes from that official documentation, not from our own testing.

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The difference is not just the material

All three versions share much of the same rigid-media support. What changes is the second printhead and, therefore, the workflow you can carry out:

This clears up a common misunderstanding: UV DTF is not exclusive to UV+DT. All three can print A film and create UV DTF transfers. The DT abbreviation in the third version refers to its textile printhead—DTG and textile DTF—not to the UV transfer applied to objects.

If you are still choosing a configuration, the complete comparison is available in Single UV, Dual UV, or UV+DT. The printhead configuration is set at the factory and cannot be expanded later.

What can be printed directly

The official matrix confirms direct UV printing in all three versions on acrylic, metal, glass, ceramics, certain plastics, wood, paper, and lenticular film. They also support cups and cylindrical containers with the OR1 rotary attachment.

The fact that a material is listed as compatible does not mean that every piece in that material family will adhere equally well:

• Acrylic: all three versions support it. xTool recommends the appropriate primer to improve adhesion.
• Metal: all three as well, but the surface coating makes a significant difference to the result. The official recommendation is to use a suitable primer and carry out a test.
• Glass and ceramics: supported with primer. For cylindrical tumblers, OR1 is suitable; if there is a handle, complex curves, or significant changes in height, UV DTF transfer is a more practical option than printing directly.
• Plastics: xTool highlights ABS, polycarbonate, and acrylics. Silicone, soft rubber, and low-surface-energy plastics may cause the ink to peel off.
• Wood: can be printed on all three. A flat surface provides greater definition; very porous or rough wood may require prior sealing.
• Paper and cardstock: can be printed directly, provided thin sheets are held securely so they do not curl and reach the printhead.
• Lenticular: available on all three, but requires precise alignment of the sheet.

The two important exceptions: leather and fabric

According to xTool's table, direct printing on leather and other flexible substrates is supported by Dual UV because it has flexible white ink. Single UV and UV+DT are not listed as compatible with this direct-printing workflow. This does not prevent you from applying a transfer prepared using another method; it means you should not confuse that with printing directly on the material and then bending it.

Printing on garments or fabric is exclusive to UV+DT. In that case, we are not talking about UV ink on fabric, but about the textile printhead and a DTG or DTF process: pretreatment, printing, and heat curing. xTool recommends garments with at least 50% cotton for its reference DTG results. We explain this in more detail in the UV+DT version guide.

When primer is needed

UV ink cures on the surface: it does not penetrate like textile ink. On smooth, hard materials, a primer creates the adhesion bridge between the substrate and the ink. xTool recommends it especially for glass, ceramics, metal, and acrylic.

1. Check the substrate. Two metals with different coatings may require different preparation.
2. Apply only to the print area, leaving a small margin around it.
3. Apply a thin, even coat. Buildup, drips, or brush marks will eventually show in the result.
4. Wait for it to dry. The surface must no longer be wet or glossy before loading it.
5. Do not perform a scratch test immediately after printing. xTool indicates that the freshly cured layer needs to stabilize before it is rubbed, scratched, or packaged.

Primer does not make every plastic or coating compatible. If the piece is valuable or you are going to produce a batch, adhesion testing is still part of the job.

Films: which one belongs to each workflow

The other source of confusion is buying “film for the Omni” as if there were only one. The official guide separates several families:

• Sheet Film A: it receives the UV DTF design for individual units or small batches. This is the format intended for the foil workflow.
• Roll-fed Film A: it serves the same function for long or repeated jobs and is used with the RF1 feeder.
• Film B: it is laminated onto A to form the transferable structure of the UV DTF label.
• Transfer film and release film: they are part of the specific foil process, used to transfer the finish and remove the excess.
• Metallic film: adds gold, silver, or holographic effects.
• White, ultra-clear, or static-cling adhesive vinyl: it is printed and then applied; the last type uses no adhesive.
• 3D label film: transparent TPU or silicone used to transfer logos and localized raised details onto fabric with a heat press.
• Textile DTF film: this belongs only to the UV+DT workflow and requires hot-melt powder, curing, and heat pressing.

The LM1 laminator is the core accessory for UV DTF and foil; the RF1 is used for roll-fed work. Neither turns a Single or a Dual into a textile printer: they are different processes even though they share abbreviations.

Foil and difficult surfaces

xTool places foil on flat, rigid pieces—acrylic, coated metal, sealed wood, cardstock, or signage—materials that can remain flat, and on finished UV DTF transfers. Complex curves are better handled by printing the transfer first and applying it afterward.

There are three practical limits in the documentation: clean grease and dust before printing; test tiny text, complex textures, and large fills; and secure thin films so they do not lift and strike the printhead.

The shopping list starts with the final product

It is not advisable to buy all the consumables “just in case.” The sensible sequence is:

1. Define three or four products that you are actually going to manufacture.
2. Decide whether the items will be printed directly or by transfer.
3. Check which O1 version supports that workflow.
4. Add the primer, films, and accessories required by each product.
5. Set aside material for adhesion and finish tests before selling a production run.

In our case, the Dual UV makes sense because of the flexible white ink and because our focus is on objects rather than garments. That decision does not make the Dual «the best»: the Single avoids maintaining a second printhead if you are only going to work with rigid materials, while the UV+DT is the only one that opens up the true textile workflow.

Frequently asked questions

Can all three versions make UV DTF stickers?

Yes. All three support the UV DTF workflow. You will need the corresponding films and lamination; for roll work, the RF1 is also required.

Does the UV+DT print directly on leather?

The official matrix reserves direct leather printing for the Dual UV with flexible white ink. The UV+DT dedicates its second printhead to the textile workflow, not fluorescent inks or flexible UV white ink.

Is primer needed for everything?

No. xTool highlights it for smooth, hard surfaces such as glass, ceramics, metal, and acrylic. The exact requirements depend on the surface finish and must be validated with a test.

Can you print on the area from which people drink or on a food-contact surface?

That is not the use xTool recommends. Its guide says to avoid the drinking rim and food-contact areas on glass and ceramics.

Will we be able to publish real settings for each material?

Yes, once the machine arrives and we can repeat the tests. Until then, we will not present brand or beta-tester settings as experience from our workshop.

Noemi and Javi from Picasita here. We have purchased and paid for an xTool O1 Omni Dual UV Versatile [xTool EU], but it has not yet arrived at our workshop. This guide adapts the official xTool materials matrix, updated on August 12, 2026. More xTool tutorials and guides.