Handbook

Every chart, table and calculation a fitter or machinist reaches for. On iPhone and Apple Watch.

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Overview

Handbook puts the printed charts, tables and pocket references of a machine shop in your pocket. One hundred tools for machining and fitting, each built to be used at the machine or the bench, with a job waiting.

It was designed on a workshop floor by a machinist, for the questions that come up between cuts.

Machining

Answers you can check.

Speeds, feeds, threads and tooling, with the working shown so you can check it.

  • Turning10
  • Milling8
  • Drilling7
  • CNC9
  • Measurements9
  • Reference8
  • Tooling1

  1. Spindle Speed

    Enter a cutting speed and a diameter, and get the spindle speed with its formula underneath. 180 m/min on a 50 mm bar is 1146 RPM.

    • Formula shown
    • Metric and imperial
    • Recommended cutting speeds
    The Spindle Speed calculator showing 1146 RPM, with the formula and the two input values.

  2. Thread Dimensions

    Every diameter and the thread depth from a size and a pitch. For M12 × 1.75, the depth is 1.074 mm.

    • Major, pitch and minor diameters
    • Thread depth
    • Internal and external
    The Thread Dimensions calculator showing the diameters of an M12 by 1.75 thread.

  3. Speeds and Feeds Advisor

    Choose the material group and how hard you want to push. Handbook recommends the speed, feed and depth of cut to start from.

    • Material groups
    • How hard to push
    • Speed, feed and depth of cut
    The Speeds and Feeds Advisor showing 1273 RPM, a feed of 382 mm/min and a depth of cut of 0.5 to 4 mm for steel.

Fitting

Built for the fitting bench, too.

Hydraulics, bearings, fasteners and augers, for the jobs away from the machine.

  • Hydraulics15
  • Essentials7
  • Augers6
  • Splines and driveline8
  • Bearings3
  • Fasteners and torque4
  • Balancing3
  • Adhesives and sealants2

  1. Cylinder Force and Speed

    Push and pull force, extend and retract speed, from bore, rod, pressure and flow.

    • Push and pull force
    • Extend and retract speed
    • Bore, rod, pressure, flow
    The Cylinder Force and Speed calculator showing push force, pull force, extend speed and retract speed.

  2. Bolt Torque

    The right torque for the size and grade, dry or lubricated. An M12 8.8 takes 88.0 N·m.

    • Size and grade
    • Dry or lubricated
    The Bolt Torque calculator showing 88.0 newton metres for an M12 grade 8.8 bolt.

  3. O-Ring Sizes

    Find the ring by cross-section and inside diameter, with its BS and BU size.

    • BS and BU sizes
    • By cross-section
    The O-Ring Sizes chart, with a dimension diagram and a table of sizes for a 1/8 inch cross-section.

  4. Auger Guide

    Measure a flight once and order it right, with every dimension labelled on the diagram.

    • Labelled diagram
    • Every flight dimension
    The Auger Guide, with a labelled diagram of an auger and its five dimensions.

Find anything

Everything is where you expect it.

Two tabs, sorted the way the trade thinks, and a search that knows every tool.

  1. Machining

    Turning, milling, drilling, tooling, reference, CNC and measurement.

    • Turning
    • Milling
    • Drilling
    • CNC
    The Machining tab, listing the Turning, Milling, Drilling, Tooling, Reference and CNC groups.

  2. Fitting

    From hydraulics and bearings to augers, balancing and adhesives.

    • Hydraulics
    • Bearings
    • Augers
    • Adhesives
    The Fitting tab, listing eight groups from Essentials to Splines and Driveline.

  3. Search

    Type a few letters to find a tool. If the answer is not a tool, ask Spectre instead.

    • Every tool
    • Ask Spectre from results
    Search results for the word thread, listing eight matching tools.

Spectre

An assistant that speaks the trade.

Ask the way you would ask the person at the next machine. Spectre shows every step.

  1. Worked out, not guessed

    Spectre runs Handbook’s own calculators and shows the inputs it used.

    • Handbook’s own calculators
    • Inputs shown
    Spectre answering a question about slotting 6061 with a 10 mm three-flute carbide end mill, after using the spindle speed, feed rate and removal rate calculators: 7,958 rpm and about 1,194 mm/min.

  2. Searches when it needs to

    Web results come with their sources, so you can check them.

    • Web search
    • Sources linked
    Spectre comparing 6205-2RS and 6205-ZZ bearings after a bearing lookup and a web search, with three sources listed.

  3. Every conversation kept

    Pick up where you left off, from any chat.

    • Full history
    • Pick up any chat
    The Spectre conversation list, with chats about slotting 6061, bearing closures, an M10 tap drill, an H7/g6 fit and the weight of round bar.

Notes

Remember what worked.

Save what worked, right next to the calculator you used.

  1. Feeds and Speeds notes

    Each note keeps the machine, the tool and a photo of the setup.

    • Machine and tool
    • Photo of the setup
    • Share with the community
    Feeds and Speeds notes: Horizontal Borer Roughing, Nylon Roughing and VNMG Ertalon and Nylon Finishing, each with a machine, a tool and a photo.

Make it yours

Make it yours.

Start from a preset, then change as much or as little as you like.

  1. Stickers

    Place symbols, or words of your own like “serious gear for out here”, anywhere on the home screen.

    • Presets
    • Colours and backdrop
    • Title typeface
    • Stickers
    The Handbook theme editor on the Stickers tab: a pale backdrop with a gear, sparkles, a sunrise, crossed tools and the words serious gear for out here placed on the home screen.

Apple Watch

The numbers you need, on your wrist.

Speeds and feeds, cutting speeds by material and a unit converter, without reaching for your phone.

Handbook on Apple Watch, listing Turning RPM, Cutting Speed and Milling RPM.
Feeds and Speeds. The calculators you use most, one tap away.
Turning RPM on Apple Watch, showing a diameter of 50 and a result of 1146 rpm.
Turning RPM. Spindle speed from two numbers. 50 mm at 180 m/min is 1146 rpm.
Material Speeds on Apple Watch, listing carbide and high-speed steel cutting speeds for mild steel and alloy steel.
Material Speeds. Starting speeds for carbide and HSS, by material.
The unit converter on Apple Watch, showing 0.75 inches as 19.05 millimetres.
Converter. Inches, millimetres and thou, converted as you type.

Additional features

Thoughtful in every detail.

Small features that save time every day.

History

Every calculator remembers its answers. Open one again and your inputs are already filled in.

Units

Millimetres or inches, everywhere. Set your default once.

Siri and Shortcuts

Ask Siri for speeds and feeds, or open any calculator by name.

Spotlight

Search a thread, designation or product code right from the Home Screen.

Balancing

Log balancing jobs and mandrels. Photograph the balancer's printout and the job fills itself in, then share a finished report as a PDF.

iCloud sync

Notes, history, pins and settings follow you between devices, through your own iCloud account.

Privacy

Your data
Your notes, tooling and logs stay on your devices. iCloud sync uses your own private iCloud account; Deoxy Labs keeps no copy.
Community posts
Nothing is published unless you post it, and every post is signed by a key only your iPhone holds.
Collection
No device identifier, no location, no access logs.
Profile
Every profile field is optional. Clear it any time.
Policy
privacy.deoxylabs.com

Requirements

Beta
Join the beta on TestFlight
iPhone
iOS 26 or later
Apple Watch
watchOS 11 or later
Units
Metric and imperial
System features
Siri, Shortcuts, Spotlight and iCloud sync
Support
[email protected]