KerfKeep: Cut List Optimizer

Put your offcuts to work before buying more stock. KerfKeep helps you plan straight cuts in wood, pipe and bar stock, follow a clear cutting diagram and carry usable leftovers into your next project.

PLAN THE JOB BEFORE THE FIRST CUT
Need five 600 mm pieces and three 850 mm pieces? Enter your available stock lengths and quantities, then add the parts you need. The linear cut optimizer builds a material-by-material plan with saw kerf and end trim included, so you can review what to cut from each length.

GIVE LEFTOVERS A NEXT JOB
Add existing offcuts and use inventory with the same material and profile label in a new plan. Set the minimum leftover length worth keeping. Stock is updated when you explicitly complete the job: used offcuts are deducted and usable new ones are saved. Trying a plan does not consume your inventory.

TAKE THE PLAN TO YOUR WORKBENCH
See the parts, cutting loss and remainder for each stock piece. Workshop mode keeps the screen awake and lets you check off cuts as you go. Ads are hidden in workshop mode. Print the plan or save it as a PDF through Android's print service.

REUSE YOUR SETUP
Save and duplicate projects for repeated work. Switch between millimetres and decimal or fractional inches, such as 2 3/8. Export and restore a JSON backup of projects and inventory. No app account is required; core cutting calculations and saved workshop data work offline. Choose from 16 app languages.

CORE WORKSHOP TOOLS ARE FREE
Use cutting calculations, saved projects, offcut inventory and printing/PDF without a subscription. The app includes advertising; an optional one-time purchase removes ads.

Designed for straight 1D cutting, not sheet layouts or angled cuts. A recommended plan does not guarantee minimum material use; optimality is shown only after a completed exhaustive search for the stated objective. Check measurements, material suitability and cutting order before working. Advertising and payment services process data separately; see the privacy policy.

Recent changes:
Updated Android libraries and improved compatibility and stability.