CNC RPM, Feed Rate and Chip Load Formulas
Keep CNC RPM, feed-rate, chip-load, and unit formulas visible without publishing machine or material presets.
- Fields
- diameter, flutes, chip load, surface speed
- Feeds
- CNC Feeds and Speeds, Steps/mm
Reference table hub
Look up
Pick a table for the material, gas, power, or setup assumption.
Calculate
Feed the value into the laser quote, energy, ROI, or hourly-rate calculator.
Validate
Compare the result with test cuts, invoices, utility bills, or shop records.
Standardize
Move proven values into your internal quote worksheet or SOP.
Common laser tables
Keep CNC RPM, feed-rate, chip-load, and unit formulas visible without publishing machine or material presets.
Compare source-labeled feed examples; use a matching OEM or test-cut value for straight-path time.
Compare gas identity, measured use, supply basis, and shop cost before quoting.
Keep sheet cost and weight assumptions visible.
Check the electrical share of a quote or equipment case.
Capture tested machine-specific values and their review scope before reuse.
Match the installed optic to its OEM code, then retain a separate job-specific focus record.
Move measured kerf evidence into CAM, nesting, and quote review.
Keep measured flow and delivered cost tied to the gas estimate.
Keep post-cut work visible instead of hiding it in pure cycle time.
Record the evidence behind pierce time for hole-heavy jobs.
Use controlled checks for dross, burr, incomplete cuts, and quality drift.
Clean drawing inputs before CAM, nesting, cycle-time, and quote review.
Separate cut capability from dimensional and structural acceptance.
Turn a sample cut into a reusable source record.
Preserve the actual thickness when a supplier uses gauge labels.
Keep sheet weight tied to a material and supplier source.
Separate nesting utilization from the shop scrap policy.
Track consumables without inventing replacement prices.
Connect inspection evidence to a repeatable quote packet.
Keep CO2 material settings tied to a tested record.
Record speed and power without claiming universal presets.
Tie focus position to lens and surface geometry.
Separate artwork fill time from setup and handling.
Identify material and safety boundaries before engraving.
Keep masking and cleanup work visible in the estimate.
Use controlled checks for scorch, banding, and ghosting.
Record rotary geometry and setup before estimating time.
Save the selected test-grid cell with its quality reason.
Prepare complete engraving quote inputs before release.
Scope tube geometry before applying any process record.
Record tube yield and remnant policy.
Keep rotation and handling separate from cut time.
Compare an ideal geometry envelope with recorded machine space; obtain separate fixture/CAM review.
Compare drawing-owned limits and measured features; no universal minimum is supplied.
Use controlled checks for tube dross, alignment, and distortion.
Connect tube inspection evidence to quote release.
Keep allowance and nest spacing assumptions consistent.
Stop high-hole-count jobs from being underpriced.
Make every calculator share the same shop cost basis.
Reference data governance
These pages contain source-attributed rows, transparent formulas, and shop-record templates. Keep the original source, unit, machine/material scope, and review status attached when a result enters a quote; supplier terms, machine condition, optics, gas delivery, and operating practice can change its applicability.
| Quote question | Reference pages | Result to carry | Check before reuse |
|---|---|---|---|
| What time belongs in the part or batch estimate? | Cutting speeds, process/setup record, piercing, and finishing; for tube, use tube cycle time. | Cut path/feed calculation plus separately measured pierce, setup, rotation/handling, and finishing work where applicable. | Exact CAM revision and matching machine, material, fixture, and timed stages; never count an included interval twice. |
| Does the material/process record support this setup? | Material/gas, processing parameters, and test-cut log. | Source-labeled setup and test evidence for the grade, thickness, gas, head, optics, nozzle, and result. | A historical or incomplete row is not a production setting; confirm missing grade, machine, units, source revision, and acceptance result. |
| What stock cost and usable material enter the quote? | Material costs, sheet weight, sheet yield, or tube length yield. | Supplier price and chargeable stock, measured weight/area/length, accepted-part yield, and separately tagged remnant. | Keep one basis per ledger. Apply a remnant credit only under the recorded shop/customer policy; do not count it twice. |
| Which shop costs belong in the hourly rate? | consumables log, hourly rate, and overhead allocation. | Recorded labor, overhead, depreciation, productive hours, and one selected recurring consumables allocation. | Use actual shop records and a consistent productive-hour basis; do not also charge the same cost directly to the job. |
| How do gas and electricity become cost? | Assist gas, gas consumption, and power consumption. | Measured gas-on volume and actual electrical kWh at the matching supplier/utility rate. | Preserve actual/reference flow basis and meter boundary. Pressure alone is not flow; separate fixed supply or demand charges. |
| What work and quality evidence supports a CO₂ engraving price? | material tests, fill/pass time, cleanup, and quote inputs. | Matching material/lens test, ideal or measured run time, setup, cleanup, and the accepted mark/engrave result. | Check material compatibility and ventilation; distinguish ideal motion from measured job time and hand work. |
| Can a tube job move from estimate to release? | tube dimensions, tube gas, fixture, and inspection. | Profile/wall and fixture scope, sourced or measured process evidence, distinct cycle stages, and drawing-based inspection record. | Keep tube inputs separate from flat-sheet rows; hold when the OEM scope, drawing criteria, measurement evidence, or reviewer is missing. |