3D Pen Skeleton
Try it free

Turn any photo into a 3D-pen template

Upload a picture of an object and get printable ribs and rings to trace with your 3D pen. Put them together and you have a 3D frame of it.

Try it free See how it works

Free. No sign-up. Works on any device.

  1. A side-view picture of a rubber duck
    1Your photo
  2. A printed page of numbered, colored rib and ring outlines
    2Printable template
  3. The ribs and rings assembled into a 3D duck frame
    3Your 3D frame

How it works

Three steps from a photo on your phone to a frame on your desk.

  1. Step 1
    Upload a photo
    A side view of one object on a plain background works best. The app cuts it out and builds a 3D shape from its outline.
  2. Step 2
    Print the template
    Pick the size and detail, then download a PDF of numbered ribs and lettered rings. Print it at 100% on A4 or Letter.
  3. Step 3
    Trace and assemble
    Trace every piece with your 3D pen, peel them off, and stand the ribs up on the outline at their numbered lines.

  • Free, no sign-up

    Open the app and start. No account, no watermark.

  • Adjustable detail

    From a quick 3-rib sketch to a detailed 11-rib frame.

  • Numbered and color-coded

    Every rib and ring is labeled, with ticks where pieces cross.

  • Real-size printing

    Set the size in centimeters. A 50 mm scale bar confirms the print.

  • Your photos stay private

    Used only to make your template, then deleted automatically.

Questions

A side view of a single object on a plain background, with the whole object in the frame. The photo's outline becomes the profile everything else is built from. Cut-outs with a transparent background work too.

A 3D pen, a printer, and plain paper. Print the PDF at 100% scale (not “fit to page”) and check the 50 mm scale bar with a ruler.

Trace every piece on the printout, peel them off, and stand each numbered rib up on the profile at its matching numbered line. Lettered rings wrap around the ribs, and small ticks show exactly where pieces cross.

Yes. There's no account, no watermark, and no limit on downloads.

You choose the size in centimeters before downloading. If a piece won't fit on the page, the app tells you the largest size that does.

Yes. The Detail slider sets how many ribs and rings you get and how smooth the curves are. Advanced settings let you choose the exact counts, and Thickness makes the shape flatter or rounder.

It's used only to find the object and build your template. It's kept while you're working on it and deleted automatically a few hours later. It's never shared. The privacy policy has the details.

Depth is estimated from the outline, and the object is assumed to be the same front and back. Parts that overlap in the photo, like an arm in front of a body, merge into one shape. Try a clearer side view, or use Thickness if the object is flatter or rounder than it looks.

Got a 3D pen? Pick a photo.

Your first template takes about a minute.

Try it free