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MACHINIST WORKBOOK /// v2.0

Calculators

Speed & Feed

Bolt Part #s

Shop Parts

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Calculators

// ENTER VALUES IN YELLOW — RESULTS IN ORANGE

Dividing Head

INDEX

Desired Divisions

Holes on Index Plate

Standard 40:1 ratio assumed

Full Rotations

—

Extra Holes

—

Material Cut-Off

ROUND

Starting Diameter (in)

Desired Diameter (in)

Upper Limit (+ in)

Lower Limit (- in)

Total to Remove

—

Per Side

—

Tolerance Range

Max to Remove

—

Min to Remove

—

Max Per Side

—

Min Per Side

—

Speed & Feed

RPM

SFM (Surface Feet/Min)

Diameter (in)

Calculated RPM

—

RPM = (SFM × 3.82) / Diameter

Gear Ratio

SIMPLE

Pinion Teeth

Ring Gear Teeth

Gear Ratio

—

Gear Ratio

COMPOUND + RPM

Input Gear Teeth

Output Gear Teeth

Input Speed (RPM)

Ratio

—

Output RPM

—

Bore Displacement

ENGINE

Bore Size (in)

Stroke Length (in)

Number of Cylinders

Displacement (CI)

—

Liters

—

CI ↔ Liters

CONVERT

Cubic Inches → Liters

Liters

—

Liters → Cubic Inches

Cubic Inches

—

Engine CFM

CARB SIZING

Displacement (CI)

Maximum RPM

Volumetric Efficiency (e.g. 0.85 = 85%)

Recommended CFM

—

CFM = (Displacement × RPM) / VE / 3456

Taper

TPF / TPI

Large Diameter D (in)

Small Diameter d (in)

Length (in)

Taper/Foot (TPF)

—

Taper/Inch (TPI)

—

Temperature

°C / °F

Celsius → Fahrenheit

Fahrenheit

—

Fahrenheit → Celsius

Celsius

—

Trigonometry

SIN / COS / TAN

Angle (radians) → Sin

sin(angle)

—

Angle (radians) → Cos

cos(angle)

—

Angle (degrees) → Tan

tan(angle in °)

—

Degrees → Radians

Radians

—

Base (Xⁿ)

Exponent (n)

Result

—

√ Square Root of

Result

—

Speed & Feed Rates

// SFM REFERENCE — HSS & CARBIDE TOOLING

Turning

SFM

Material	Designation	HSS (ft/min)	Carbide (ft/min)

Milling

SFM

Material	Designation	HSS (ft/min)

Drilling & Reaming

SFM

Material	Designation	Drilling (ft/min)	Reaming (ft/min)

Bolt Part Numbers

// FASTENER REFERENCE LIST

Description	BD Part Number

Shop Part Numbers

// PARTS INVENTORY — EDIT QTY ON HAND BELOW

Description	Part Number	Source	Price	Desired Qty	Qty on Hand

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Test page

Bolt Thread Data Calculator

Metric (ISO) Imperial (UNC/UNF)

Nominal diameter

Pitch (mm)

Note: values are geometric approximations for 60° threads (for guidance only).