Straight duct
Make a square or rectangular run.
TIN BADGER · DUCTBOARD AT THE BENCH
Enter your finished inside dimensions. Get layout marks, illustrated instructions and cutting demonstrations for straight duct, elbows, offsets and reducers.
Planned subscription: $5/month. Cancel anytime.
FOUR FITTINGS. ONE CLEAR WORKFLOW.
Make a square or rectangular run.
Turn a run through 90°. Choose which dimension bends.
Connect displaced sections with a cut-and-rejoin offset.
Connect different opening sizes, centered or with selected walls flat.
WATCH IT WORK
FROM THE APP
Tap any screenshot to open the full-size image.

Example only. Generate the complete plan for your fitting and follow its setup and cutting instructions.
1½″ ductboard. AmCraft Red 1084 / Blue 1087. Tape, square, straightedge and duct knife; reducers also use the level-and-trim method.
The app checks whether the requested fitting fits the supported board and tool paths before showing marks. Some sizes and short, steep reducers are not supported. 2″ board and one-piece transitions are not currently supported. Tin Badger does not size ductwork for airflow.
Planned subscription: $5/month. Cancel anytime.
Internet is required to open lessons. An open lesson can keep calculating without reception. Videos and other pages may require a connection.
Questions about Tin Badger? Email rich@thechillypig.com.
Tin Badger is operated by SS Mechanical LLC.