G-Wizard Thread Calculator: Awesome Software [Free + Advanced]

G-Wizard Thread Calculator: Awesome Software [Free + Advanced]

Have you had a chance to try our new Thread Calculator?  G-Wizard Thread Calculator is a premium add-on module for G-Wizard Calculator.  It’s free during Beta Test, you just need a working trial or subscription copy of our G-Wizard Calculator.

Note:  G-Wizard Thread Calculator is currently in Beta Test and is therefore not officially released for production use.
You’re welcome to use it for free during the Beta Test.  Be sure to check all values carefully for errors and
report any problems or feedback to bob@cnccookbook.com.

What is a Thread Calculator?

Screw Threads are complex beasts.  They’re based on standards that run to hundreds of pages.  We depend on screw threads to be interchangeable if we follow the proper standard correctly.  The goal of a Thread Calculator is to give you comprehensive capabilities to deal with screw threads:

  • Determine Thread Dimensions such as Major Diameter, Minor Diameter, Pitch Diameter, and dozens of other variables that specify a screw thread.
  • How to check those dimensions, for example use the “Measure Over Wires” technique or what the dimensions should be if you want to make Go/No Go Gages.
  • Tell  you what the tolerances are to keep your screw threads within spec for their Tolerance Class.
  • Calculate all of this for standard and non-standard screw thread sizes.
  • Tell you what tap drills to use for tapping internal threads.
  • Print detailed reports to be used for inspection, quality control, and documentation.
  • Handle the largest possible variety of screw thread types.

G-Wizard Thread Calculator can do all this and more.

The alternative is scouring the net, finding limited tools that only perform one task such as a thread minor diameter calculator.  Or worse, finding dozens of UN thread calculators, but not being able to find help for your important but obscure screw thread at all.

Typical software that’s available today ranges from free for relatively limited calculators to over $1000 for the most sophisticated that includes support for proprietary oilfield tapered threads.

Our G-Wizard Calculator has included a Free Thread Calculator since the beginning.  We’ll keep offering that, but we’re also adding an Advanced Thread Calculator with features and functions that rival the high-end packages at a much more reasonable price.

If you’re going to be programming a CNC for threading, you want a high quality cnc threading calculator at your disposal.

G-Wizard Thread Calculator, a new software product for CNCCookbook, is available for Beta Test.  You can download it here:

[ Download G-WIzard with G-Wizard Thread Calculator ]

Like each of our packages before, you’ll be able to use it free of charge during the Beta Test.

There’s just one proviso–you must have an active G-Wizard Calculator Trial or Subscription, because G-Wizard Thread Calculator is an add-on module for G-Wizard Calculator.  BTW, we also have G-Wizard Estimator in development, which is the same deal–you can use it free as long as you have an active G-Wizard Calculator Trial or Subscription.

Remember:  This is Beta Software and you will almost certainly encounter bugs.  Just report them to me via email to bob@cnccookbook.com.

 

Free G-Wizard Thread Calculator

We were one of the first machinist’s calculators to include screw threads, and our Free Thread Calculator remains one of the most feature rich.  Here is G-Wizard’s Free Thread Calculator:

free thread calculator

As you can see, it’s a pretty nice calculator.  One of my favorite features is the Tap Drill Size chart, which helps you avoid broken taps by selecting the best drill for your application.  Even the free thread calculator has a number of excellent features:

  • Covers both external threads and internal threads for UN and ISO thread standards
  • Covers tapered external and internal threads (pipe threads) for NPT.
  • Key thread dimensions presented in graphical form such as pitch diameter, major diameter, minor diameter, threads per inch (or mm), thread pitch, and more.
  • Choose the tolerance classes.

If you just need a basic UN Thread Calculator or ISO Thread Calculator for metric users, it’s hard to beat this free tool.  But, for more exotic screw thread families and for more features and screw thread information, you’ll want our Advanced G-Wizard Thread Calculator.

A Quick Tour of G-Wizard Thread Calculator

Using G-Wizard Thread Calculator is straightforward.  Follow these steps:

Select the GW Threads tab in G-Wizard Calculator

If there is no GW Threads tab, it means you’re not registered to use GW Thread Calculator.  Go to the product page and register for a free trial or purchase.

Select Straight or Tapered (Pipe) Threads

GW Thread Calculator divides screw threads into Straight and Tapered (Pipe threads are often tapered) groups.  Select the tab at top for the one you want.

Select a Screw Thread Family and Preferred Thread Size

Screw Threads belong to families that determine the general shape and geometry of the screw threads.  A Family also has a list of Preferred Thread Sizes that are standard for that Family.  You select both using the dropdowns at the top left of the GW Thread Calculator:

Custom Threads

Not all families allows custom thread sizes, but many do.  You’ll need to enter a Nominal Size (also known as the Basic Major Diameter) and either TPI (Threads Per Inch) or Pitch (many metric Families use pitch) for your custom thread size.  Given your desired Tolerance Class, GW Thread Calculator will then calculate all the dimensions for the screw thread.

Tolerance Classes

Not all thread families have tolerance classes, but when they do, you’ll set them here from the “Class” dropdown.

Thread Starts

Change the number of starts from the default of “1” to create a multi-start thread.

Tapping Drills

Determine the optimal size for your tapping drill based on whether you have a cutting or forming (thread rolling) tap and on what percentage threads you want to create.  Be sure to check out our in-depth article to understand the effect of thread percentages on tap life.

Graphics View vs Report View

Graphics View gives you a quick visual summary of the thread.  Report View has a lot more information and is intended when you want to print a report with as much information as possible about a particular screw thread.

CADCAM Thread Wizard

Click this button to load the currently selected thread into CADCAM Wizards.

Measurement Over Wires

G-Wizard Thread Calculator includes a Measurement Over Wires Calculator for External Thread measurement:

At the top of the MOW Calculator are the Min, Max, and Recommended Best Size to use for measuring wires.  Enter your actual wire size, and the MOW Min and Max for the thread to be in spec are given.  Enter the Size Over Wires you measure and the pitch diameter of the thread will be given.

The feature list for G-Wizard Thread Calculator is not frozen yet (see below to give us your input), but here are the major new things that are there:

More Thread Types

It goes without saying GW Thread Calculator will support a lot more thread types than our free version.  Be sure to tell us in the survey below which screw threads are important to you so they’ll be properly prioritized.  Just as we do with all our products, we’ll keep adding more thread types over time with new releases.

Custom Thread Calculator / Custom Sizes

Screw Threads have preferred thread sizes that will appear on the Size list, but GWTC can also be a Custom Thread Calculator because it allows you to specify your own Nominal Size (diameter) and TPI (Threads per Inch or mm for metric) to get a custom thread.

Thread Measurement Over Wires Calculator

Measurement Over Wires (also called the 3 wire method) is the most common way machinists measure screw threads.  The method benefits from having all the parameters and information at hand in a calculator format.

Thread Dimension Chart / Report

thread dimensions chart

It’s often important to print reports that contain all the details of a screw thread.  Whether you want a graphical view of the most important dimensions, a quick reference chart of all the details, or a printed report, GWTC has you covered.

Pluggable Standards-Based Engine Architecture

The biggest change from our old Free Thread Calculator is the completely new Pluggable Standards-Based Thread Engines.  Our Free Thread Calculator was built on a database approach.  All the key values were there so very little calculation was needed.  The new G-Wizard Thread Calculator is based on a calculated approach.  It uses the same formulas described in the screw thread standards, such as ASME B1.1-2003 for UN threads.

This accomplishes several things.  One, it makes it possible to calculate screw threads based on arbitrary combinations of Nominal Size and Threads Per Inch.  Second, it makes it easier for us to add large numbers of new screw threads over time, including much more exotic screw threads.

Manual Lathe Guides

Manual Lathe Guides give you step-by-step instructions for how to cut whatever screw thread you’ve selected.  Here’s what they look like:

One thing that’s really cool about them is they tell exactly how many passes need to be made and the depth of cut for each pass.

Screw Thread Families Supported by G-Wizard Thread Calculator

Screw Thread Family / Series Designation

Standard

Thread Sizes

Free Thread Families included with G-WIzard
808 Sizes

 Unified National: UN, UNC, UNF, UNEF, UNS  ANSI/ASME B1.1-2003  371GW Thread Calculator allows Custom diameter and TPI
 ISO Metric M, Coarse and Fine  ASME B1.13-2005

437

GW Thread Calculator allows Custom diameter and TPI

Premium Thread Families added by G-Wizard Thread Calculator

 UNM – Miniature Thread Sizes for Watchmaking and similar applications  ASME B1.10  14
 UN STI – Screw Thread inserts such as Helicoil.  UNC and UNF sizes.  ASME B18.29.1-2010  43
 ISO STI – Screw Thread inserts such as Helicoil.  Coarse and Fine thread sizes.  ASME B1.13M-2005  44
 Pg (Panzergewinde) Conduit Threads  DIN 40430  10
 UNJ – Aerospace Thread.  UNJC, UNJF, and UNJEF Sizes  SAE AS8879-D  82
Plus Custom diameter and TPI combinations
Metric MJ – Aerospace Thread.  B1.21M-1997 157
Plus Custom diameter and Pitch combinations
British Standard Whitworth (BSW) British Standard Whitworth (BSW) 19
Plus Custom diameter and TPI combinations
British Standard Whitworth Fine (BSF) British Standard Whitworth (BSW) 16
Plus Custom diameter and TPI combinations
 British Association (BA) BS 93:2008  17

 

Data Available for Each Screw Thread

Family (also called “Series Designation”)

Size

Nominal Size

TPI

Reference

Tolerance Class

Designation

Thread Angle

Thread Starts

Pitch

Lead

Lead Angle

Length of Engagement

Length of Engagement (Threads)

Min Major Diameter

Max Major Diameter

Mean Major Diameter

Min Minor Diameter

Max Minor Diameter

Mean Minor Diameter

Min Pitch Diameter

Max Pitch Diameter

Mean Pitch Diameter

Sharp V-Height

Flats Height

Flat

Allowance

Major Diameter Tolerance

Pitch Diameter Tolerance

Minor Diameter Tolerance

 

Tell Me More:  Latest News on the Beta Test

New Beta of G-Wizard Thread Calculator just uploaded!

The latest Beta release is contained in G-Wizard Calculator v4.15.  It adds the following:

– New Thread Family Added: Iso Metric Trapezoidal Threads.  Metric’s answer to ACME threads.

– New Feature: Manual Lathe Threading Instructions.  Scroll down to see a screen shot.  One of the coolest features is the guide will tell you how many passes are needed and the cutting depth for each pass for best results.

G-Wizard Thread Calculator, a new software product for CNCCookbook, is available for Beta Test.  You can download it here:

[ Download G-WIzard with G-Wizard Thread Calculator ]

Like each of our packages before, you’ll be able to use it free of charge during the Beta Test.

There’s just one proviso–you must have an active G-Wizard Calculator Trial or Subscription, because G-Wizard Thread Calculator is an add-on module for G-Wizard Calculator.  BTW, we also have G-Wizard Estimator in development, which is the same deal–you can use it free as long as you have an active G-Wizard Calculator Trial or Subscription.

Remember:  This is Beta Software and you will almost certainly encounter bugs.  Just report them to me via email to bob@cnccookbook.com.

What Will it Cost?

G-Wizard Thread Calculator will be a one-time purchase (no subscription needed) that acts as an upgrade for your G-Wizard Calculator.  You make the purchase and you’re done.  Like all G-Wizard Software, all updates and support are yours for life at no additional charge.  As you’d expect, existing G-WIzard Calculator customers will get a sweetheart deal to add GW Thread Calculator.  Expect GW Thread Calculator to be one of the most cost-effective premium solutions in the market.

We’ll announce the pricing when we’re ready to start charging for GW Thread Calculator.  Meanwhile, enjoy it free of charge.

How Do I Get It?

This is a beta test so I can gather your feedback.  I don’t expect the beta test to take long, so don’t miss out on the free period.  There’s been a lot of progress already, and I want to ship the product as soon as I’m convinced it fits your needs and is working properly.

To get G-Wizard Thread Calculator, all you need is a working copy of G-Wizard Calculator.  Once you’ve downloaded the latest GW Calculator, click the “GW Threads” tab to access GW Thread Calculator.

I’ll report on Thread Calculator progress on this blog, so be sure you’re subscribed for updates.  Just scroll down to the subscription form below.

Much more to come!

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