CNC Tool Setup Calculator vs CNC Setup Sheet

CNC Tool Setup Calculator is a fast, offline calculator for tool setup at the machine. Enter a tool height and radius, and it gives you the value to type into the control - with the machine's Surrogate added automatically when one is installed. A Surrogate is a measured length that is added to every tool on that machine while it stays installed. No more re-deriving the same number, and no more forgetting whether it is on. BUILT FOR THE SHOP FLOOR - Large keypad and result display, readable at arm's length - One-handed operation, portrait only - Works entirely offline - no account, no sign-in, no network - Every length shown to four decimal places, in inches PER-MACHINE SURROGATE TRACKING Each machine remembers whether its Surrogate is installed, its current measurement, when it was measured, and its full history. Height to Enter is the tool height alone when the Surrogate is removed or the machine has none, and tool height plus the current Surrogate when it is installed. A removed Surrogate value is never silently reused. TOOL PRESETS, OR ENTER YOUR OWN Pick from built-in presets for common cutter geometries - ball and lollipop endmills, bull endmills with corner radii, high-feed cutters, barrel cutters, and flat endmills, drills and taps at zero radius. Or choose Other / Manual and type any tool height and radius yourself. CALCULATION HISTORY Keeps up to 1,000 saved setups. Reuse a past setup with one tap - it keeps your current machine and never restores a historical Surrogate value. ACCESSIBILITY Full VoiceOver support with real unit announcements, haptic feedback on key presses, and glove-friendly touch targets. SAFETY This app assists with tool setup calculations. Always verify Tool Height, Radius, machine configuration, and workplace procedures before entering values into a CNC control. PRIVACY Everything stays on your iPhone. The app has no accounts, no cloud sync, no analytics, and makes no network requests of its own. The full privacy and safety notice is readable inside the app under Settings.

The setup sheet, done in 30 seconds. Enter your material and tools — CNC Setup Sheet computes spindle speed, feed rate, surface speed and chip load, then lays everything out as a clean, printable shop-floor setup sheet you can hand to the machine. BUY ONCE. NO SUBSCRIPTION. The Pro upgrade is a single one-time purchase. No monthly fees, no account, no cloud. The app works fully offline — on the shop floor, in the garage, anywhere. YOU OWN THE NUMBERS. Every computed value is a starting point, not a verdict. Override RPM, feed, SFM or chip load before you export — the sheet prints what you decide. WHAT'S INSIDE • Feeds & Speeds — RPM, feed rate, SFM and chip load for milling, from material + cutter + flutes. Spindle-limit aware. • Drilling — speeds and feeds for twist drills, with peck guidance. • Tapping — tap drill sizes (UNC/UNF and metric) and rigid-tapping feed synced to thread lead. • Converter — SFM ↔ m/min, inch ↔ mm, feed units. • Setup Sheet — job header (part, machine, workholding, WCS, coolant), tooling & cut data table, operation sequence and setup notes, exported as a US-Letter PDF you can print, share or email. BUILT FOR CNC machinists, job-shop programmers, home-shop and garage machinists, makers running desktop mills. MATERIALS Aluminum, brass, bronze, copper, mild steel, alloy steel, tool steel, stainless, cast iron, titanium, plastics — with conservative starting SFM and chip-load values compiled from common shop references. FREE VS PRO Free: every calculator and the full setup-sheet editor. Exported PDFs carry a SAMPLE watermark. Pro (one-time purchase): removes the watermark — clean, print-ready setup sheets. Cut data are reference starting values. Always verify against your tooling manufacturer's data and machine limits before cutting.