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Aoneko Tools
AONEKO / FREE PRINTABLE TEMPLATES

Free Ring & Donut Template Generator

Make circular, elliptical, C-shaped or slit ring templates. Set outer and inner diameters, or choose the band width.

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Print at Actual size / 100%. Check that the scale measures 100 mm (3.94 in).

Print preview

The screen preview is scaled. PDF keeps the actual dimensions.

Ring and donut stencil sizes

For a circular ring, band width is half the difference between outer and inner diameter. Enter both diameters or choose band width. An inner diameter of zero makes a solid circle.

Ellipse, C-shape and slit ring options

Elliptical rings use separate horizontal and vertical diameters. Band sizing subtracts twice the width from both diameters; it does not create a constant perpendicular offset around the ellipse. A slit adds one cut line on the right. A C-shape removes an angular section and joins its two ends.

Frequently asked questions

Which edge should I cut first?

Cut the inner hole first while the surrounding paper supports it, then cut the outside.

Can the inner line be dashed?

Yes. Choose the inner line style in More options.

Download and print at actual size

  1. Choose inches, cm or mm and enter the size.
  2. Adjust rotation, line style, layout and paper options as needed.
  3. Download PDF and print at Actual size / 100%, with Fit to page and borderless enlargement off.
  4. Measure the 100 mm calibration scale before using the template.

US Letter, US Legal, A4, A3 and JIS B5 are available. Oversized shapes are tiled at actual size. Trim at the printed tile borders and align the overlap. ROW and COL identify the tile position. PDF contains all pages. SVG and PNG save the current preview page; PNG is 150 dpi and print software may resize it, so use PDF for precise printing. Up to 200 shapes and 200 pages.

Dimensions are measured at line centers. Input and file generation stay in your browser, with no account or upload needed. Free for personal and commercial use.