Examples
Examples
Try the starting example
- Pocket depth (mm)
- 10
- Maximum rough step-down (mm)
- 3
- Bottom finishing allowance (mm)
- 1
- Roughing passes
- 3
- Roughing end depths (mm)
- 3, 6, 9
- Finishing passes
- 1
- Final depth (mm)
- 10
Try another scenario
- Pocket depth (mm)
- 8
- Maximum rough step-down (mm)
- 3
- Bottom finishing allowance (mm)
- 0
- Roughing passes
- 3
- Roughing end depths (mm)
- 3, 6, 8
- Finishing passes
- 0
- Final depth (mm)
- 8
Calculation method
Calculation method
Roughing passes
Round up (pocket depth − bottom allowance) / step-down.
Roughing end depths (mm)
For pass j, minimum of j × step-down and the roughing target depth.
Finishing passes
One finishing pass if the bottom allowance is positive; otherwise zero.
Final depth (mm)
The supplied final pocket depth.
Symbols and units
- a
- Pocket depth (mm)
- b
- Maximum rough step-down (mm)
- c
- Bottom finishing allowance (mm)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Axial pass-depth arithmetic only. No toolpath, feed, machine limit or safe-cut recommendation is generated.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: ratios, percentages and rectangular geometry ↗
Background reading; this does not imply endorsement or independent review of SumFizz.