Home UV Printer

UV printing on bare aluminum

License plates, signs, tags, panels. What the printer and primer makers publish about bare aluminum: primer, white ink, flat or rotary, how long prints last and what goes wrong.

Updated · This page has affiliate links: we may earn a commission, at no cost to you. As an Amazon Associate we earn from qualifying purchases. How we make money

Desktop UV
With prep
Primer
Needed
White ink
On dark or clear
Shape
Not stated

Metal and coated metal. Things people make: license plates, signs, tags, panels. From the sources at the end, checked October 11, 2026; we haven't tested it ourselves.

What it needs

Desktop UV printers
With prep eufyMake calls aluminum the easiest metal to print, but xTool, Roland, Mimaki and Inkcups all list a metal primer for it. [1] [2]
Primer or adhesion promoter
Needed. Metal adhesion promoter wiped on before printing, for example xTool Metal Primer wipes or Inkcups MetalBond (wipe on, buff off). [2] [3] [4] [5]
White ink
On dark or clear. eufyMake says dark metals need a white layer underneath; it does not say bright aluminum needs one. [1]
Flat or curved
Not stated

How long it lasts

Outdoors
eufyMake, for UV prints in general (not aluminum specifically): about 2 to 3 years outdoors; unprotected outdoor signs 1 to 2 years. [6]
Scratches and wear
xTool: with primer, scratch resistance is enough for daily use, but not for keys, blades or sanding. [2]

What goes wrong

  • Incomplete cleaning is the leading cause of poor adhesion (xTool).
  • Oil and sweat from bare hands can affect ink adhesion (Roland).
[2] [3]

Before you print

  • Clean with isopropyl alcohol and a lint-free cloth, and degrease before printing.
  • Wipe the primer on in one direction, 1 to 2 mm past the design, let it surface-dry, print soon after, then rest the piece 30 minutes (xTool).
  • A clear varnish coat is xTool's most effective way to improve scratch resistance.
[1] [2] [3]

Supplies

Look for an adhesion promoter sold for UV printing on bare aluminum, and read its data sheet for how long to let it dry: adhesion promoter (Amazon US), adhesion promoter (Amazon UK). Clean with isopropyl alcohol wipes first. Test one piece before a batch.

Every material in one table: what a UV printer can print on. Weighing up other machines? See UV against DTF, sublimation and a Cricut.

Has a maker published something different, or does your printer's manual disagree? Email hello@homeuvprinter.com and we'll check it against the source.

Sources

  1. eufyMake: How to Print on Metal at Home
  2. xTool Support: xTool O1 UV Printing Guide, Using Primer and Improving Scratch Resistance
  3. Roland DG: UV Guide, Improving Ink Adhesion on Materials Where Ink Comes Off Easily (Primer Printing)
  4. Mimaki Support: UV ink is not adhered to the substrates
  5. Inkcups: Inkcups Solution to UV Printing on Metal
  6. eufyMake: How Long Does UV Printing Last

Checked October 11, 2026.