# ChiploadPro
> Free speeds and feeds calculators for end mills and carbide slitting saws, with conservative starting values sourced from published manufacturer data (Harvey Tool, Genswiss, 6GTools, Travers, and others). Every number on the site cites its source.

## Calculators
- [End mill calculator](https://chiploadpro.com/): carbide, cobalt, HSS in 6061, 1018, 304. RPM = SFM x 3.82 / D; IPM = RPM x flutes x IPT; spindle HP check.
- [Slitting saw calculator](https://chiploadpro.com/slitting-saw/): any tooth count 1-400, teeth-in-cut check, Harvey thin-saw and deep-cut rules, Genswiss material groups.

## Guides
- [Aluminum end mill speeds and feeds](https://chiploadpro.com/guides/aluminum-end-mill-feeds/): Starting SFM and chip load for carbide, cobalt and HSS end mills in 6061, with the published ranges behind them.
- [Milling 304 stainless: speeds, feeds and flutes](https://chiploadpro.com/guides/stainless-steel-end-mill-feeds/): Conservative starting values for 304 stainless and how to avoid work hardening.
- [Slitting saw basics: teeth, depth and speed](https://chiploadpro.com/guides/slitting-saw-basics/): How tooth count, depth of cut and saw thickness change slitting saw speeds and feeds.
- [Chip thinning: why light cuts need more feed](https://chiploadpro.com/guides/chip-thinning/): When radial width of cut drops below half the tool diameter, the real chip gets thinner than your feed per tooth.
- [Choosing flute count for end mills](https://chiploadpro.com/guides/choosing-flute-count/): 2, 3, 4, 5 or more flutes: what the tool makers recommend for each material and operation.
- [Runout: the hidden feed killer](https://chiploadpro.com/guides/runout/): How tool runout overloads one flute, and the tolerances saw and end mill makers publish.

## Notes
- Values are starting points, not guarantees. Unsourced assumptions (cobalt SFM placement, HSS/cobalt chip-load derates, machine rigidity derates) are labeled on the site and listed at https://chiploadpro.com/about/.