CNC Utility Pro

v1.0 — Original CNC Utility Pro (3 files) Live Machining Simulator Basic Speeds & Feeds Tap Drill Chart Micrometer/Vernier Quiz v2.0 — Rebuilt as single ContentView.swift (8 tabs) Speeds & Feeds — material picker (8 materials), carbide/HSS toggle, auto-suggested SFM & chip load, RPM, feed rate (in/min + mm/min), MRR, HP estimate, formula reference Tap Drill — full UNC/UNF (#0-80 → 1"-14") + full Metric ISO (M1 → M30), 75%/50% thread drill, decimal inch, searchable, tap-for-detail card Converter — 12 categories, 100+ units (Length, Area, Volume, Mass, Speed, Temp, Torque, Pressure, Force, Power, Angle, Flow), wheel picker, swap button, all-at-once conversion table Triangle Solver — SSS, SAS, ASA, right triangle, all sides/angles/area/trig values, auto triangle type detection Bolt Hole Circle — canvas preview with numbered holes, XY coordinate table, auto G-code output G Codes — 50+ codes, plain-English descriptions, example per code, group filter, search M Codes — 35+ codes, full descriptions, examples, group filter, search Control Panels — HAAS NGC, OKUMA OSP, Hardinge with color-coded buttons, press animation, tap-to-explain every button v3.0 — Shop Math tab added (4 carpenter calculators) Board Feet & Lumber Cost — simple + advanced, 8 species with real pricing, 5 grades with multipliers, saw kerf loss, cut list builder, weight estimate Stair Stringer — risers/treads/angle/stringer length, IRC code compliance checks, fraction readout (e.g. 7 9/16"), step-by-step layout guide Roof & Rafter — live pitch diagram canvas, common rafter length, pitch factor, plumb/level cut angles, ridge deduction, rafter count, lumber + roofing material cost, pitch reference table Concrete — 5 shapes (slab, footing, column, sonotube, steps), bag size selector, truck vs bag cost, mix design guide, weight estimate v4.0 — Construction tab added (8 calculators) Drywall & Framing — gross/net wall + ceiling area, door/window deductions, sheet size selector, stud count, plate footage, combined material cost Paint & Coating — 6 surface types with real coverage rates, 5 paint types with price multipliers, primer estimate, ceiling toggle Flooring — hardwood, LVP, tile (with grout joint), laminate, carpet (auto sq yd), installation + underlayment cost Roofing Materials — 4 shingle types with lifespan, pitch factor, squares, bundles, 4 underlayment types, ridge cap, drip edge Excavation & Grading — rectangle/circle/trench, 4 soil types with real swell factors, loose CY, truck loads, haul cost Insulation — batts/blown/spray foam/rigid board, R-value target selector (R-13 → R-60), depth needed per type, R/inch reference Steel Beam & Load — 20 W-beam sections (W4×13 → W36×135), UDL/point loads, moment/shear/deflection, L/360 and capacity code checks Electrical — wire gauge selector with full NEC ampacity table, load/circuit calculator, voltage drop with 3% NEC check, conduit fill with 40% NEC check