Barrel Sauna Trim Template | Nicholas Fury Batson

This tool runs entirely in your browser with JavaScript. Please enable JavaScript to use it, or grab the original Python generators from the source repository.

Cylinder

Outside diameter

Inside diameter

Stave width (informational)

Inward overhang (trim past the ID)

Trim width

Trim width A

Also generate a second width (B)

Trim width B

Shingled roof (end-view diagram only)

Roof end-to-end

Midpoint → inner top

Midpoint → outer top

Computed geometry

Download PDFs

Print Letter size at 100% scale (not “fit to page”). On every sheet, verify the 1″ calibration box with a ruler before tracing.

How it works

1. Enter your measurements

Type decimals (82.375) or fractions (82-3/8). The preview and computed geometry update live as you type.

2. Download & print

The trim template tiles a full-scale half-annulus across Letter pages. The end-view diagram is a 2-page reference drawing. Everything is generated locally — nothing leaves your device.

3. Assemble & trace

Trim each sheet on the dashed border, tape them together using the red registration crosshairs, lay the template on your stock, and trace the cut lines.

The geometry began as a pair of Python generators; this page is a faithful client-side port. Source on GitHub.