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MEASURE. MARK. MAKE.

Pipe & Tube Notching Template Generator

Turn your measurements into a line you can cut: print a full-scale template, export a DXF profile, or mark directly on the tube.

BRANCH-END NOTCH
  1. Choose
  2. Dimensions
  3. Review
  4. Templates

Choose your task

Opening in the main tubeMain tube openingMake a hole in the main tube.Start guided setup →Two tubes fitted togetherMatched joint taskPrepare both parts for a set-on joint.Start guided setup →
Your jobsUntitled jointManage saved jobs

Return to a saved setup, or duplicate it before changing dimensions for another joint.

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Only this browser; clearing browser data removes local jobs. JSON is a settings backup, not a CAD drawing. File restore is not available yet.

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FROM MEASUREMENT TO A MARK YOU CAN USE

Make the next pipe joint easier to set out.

A one-off pipe connection should not begin with guessing a fishmouth by eye. Pipe Cut Templates turns the outside diameters and included angle you measured into a pipe notching template that you can print, trace, take into CAD, or mark directly at the bench. Choose the output that suits the job, then keep one clear reference from setup through test fit.

A straight round tube held level in a workshop vise, with a clean fishmouth cut at its end

01 / START WITH THE REAL TUBE

Replace hand-drawn curves with a measured starting point.

A pipe notching template starts with the dimensions that matter on the workbench: the outside diameter of the branch, the outside diameter of the mating tube, and the included angle between their centerlines. The calculator accepts millimeters or inches, including common fractions, and keeps the physical dimensions consistent when you switch units. That makes it practical when the tape measure, drawing, and material list do not all use the same notation.

Use the measured outside diameter rather than the nominal pipe name. With the values visible together, you can catch an unlikely size or angle before there is a line on the steel.

Enter a pipe joint →
A full-scale paper pattern being wrapped around a round tube

02 / A PAPER PATTERN THAT TRAVELS TO THE BENCH

Print the curve at full scale and keep the reference visible.

When a physical wrap is the fastest way to transfer the line, download a full-scale PDF from your pipe notching template. It supports common shop paper sizes and splits a large pattern across numbered pages. Match the page labels and paired alignment marks, join the overlap, then wrap the assembled pattern around the tube with its seam and square-end datum in view.

Before tracing, select actual size in the print dialog and measure the calibration marks. This check protects the setup from a printer setting that scaled the sheet. Download a sample A4 PDF or a sample Letter PDF to check your printer before a job.

See the printing and joining guide →
A workshop marking a measured curve on a round tube before cutting

03 / MARK WITHOUT A PRINTER

Take coordinates to the tube when paper is not the right answer.

For a large tube, an outdoor repair, or a bench without a printer, the same pipe notching template can provide a direct marking plan. Set a square end and a zero reference line, then follow the displayed circumferential and axial measurements point by point. The plan is designed to help you work from one datum instead of accumulating short measurements around the tube.

Choose direct marking in the calculator →
A tube layout shown beside workshop tools for checking and cutting

04 / KEEP A CAD-READY OUTLINE CLOSE

Send the flat profile to the next part of your workflow.

If your next step is a drawing review, a nesting layout, or an annotation in CAD, download a DXF from the pipe notching template. The export is a two-dimensional cut profile in millimeters with reference information on a separate layer. It is useful for keeping a job record beside a drawing or for preparing a flat outline before your own downstream process.

The DXF is deliberately an outline, not a machine instruction. It does not choose your cutting method, bevel, kerf, wall treatment, or weld preparation; those choices stay with your material and equipment.

Read the branch-end workflow →
Two straight round tubes prepared as a matching branch and main-pipe connection

05 / PREPARE BOTH SIDES OF A SET-ON JOINT

Keep the branch cut and the main opening connected.

A branch fishmouth is only one side of many jobs. The Joint tasks tool uses one set of diameters and angle to prepare a matching branch-end cut and main-pipe opening together. The paired outputs share an identifying code, so the sheets or DXF files can stay connected when more than one part is on the bench.

Open Joint tasks →
A straight round tube and workshop tools prepared for a final layout check

06 / PICK UP WHERE YOU LEFT OFF

Keep working without creating an account first.

The calculator works in the browser without a sign-up wall. Name a branch job, make a copy for a variation, or reopen a saved setup in the same browser. It is useful when comparing two angles or adjusting a measurement before another test fit.

Saved work remains on this device in this browser; it is not a cloud project system. For the right job, that means you can move from measurement to a pipe notching template without first setting up an account, sharing dimensions, or waiting for a workspace to load.

Start a saved branch job →

What this tool covers

This pipe notching template is for centered, straight round tubes whose centerlines intersect. It lays out the outside-surface intersection for a branch end. Use the separate main-pipe tool for a closed side opening. Check your material, print scale, orientation, and fit on a test piece before a finished part.

It is not a CNC toolpath, a bevel specification, a kerf allowance, or a structural certification. Those decisions depend on the material, cutting process, joint design, and requirements of your work.

QUESTIONS AT THE BENCH

A few practical answers before you cut.

What can I make with this pipe notching template?

Use it to lay out a branch-end fishmouth or saddle cut for a centered round-tube connection. You can print the full-scale PDF, export a flat DXF outline, or follow direct marking coordinates. For a main-pipe hole or a paired set-on connection, open the Main tube opening or Joint tasks tool.

Do I need a subscription or account?

No. The current tools work without an account. Saved branch jobs stay in the browser on the device you use, so use the same browser when you want to reopen them.

Where should I begin if I have never used a wrap template?

Measure the actual outside diameters and included angle, then make a small test pattern. The guides explain how to measure the angle reference and how to print, join, wrap, and check the scale before marking your material.

Which output should I use?

Choose the output for the next step at your bench. All three use the same measured dimensions.

Template output comparison
OutputUse it forCheck before use
PDFPrint, join and wrap a paper template.Print at actual size and measure the calibration marks.
DXFReview a flat outline in CAD.Import in millimeters; the file is not a CNC toolpath.
Direct markingTransfer coordinates without a printer.Keep the square-end datum, zero line and point order consistent.

Which paper sizes and units are supported?

  • A4: 210 × 297 mm
  • Letter: 215.9 × 279.4 mm
  • A3: 297 × 420 mm
  • Tabloid: 279.4 × 431.8 mm

Inputs accept millimeters or inches. One inch is exactly 25.4 mm; for example, 1½ inches is 38.1 mm. See NIST — SI Units: Length.

Adobe documents that Actual size prints without scaling. Still measure the printed calibration marks before transferring a line to metal. See Adobe Acrobat printing guidance.

Reference section reviewed: · About & contact

Illustrative workshop scenes.

READY WHEN THE DIMENSIONS ARE

Turn the numbers on your tape into a line on your tube.

Start with the branch-end calculator, then choose a printed pattern, DXF profile, or direct marking plan for the work in front of you.

Create a pipe notching template