Conversion Tables & Charts
Imperial to Metric Conversion - for converting weights, volumes, heat, power, lengths etc..
Decimal Equivalents - of fraction, wire gauge, letter and metric sizes

Carbide Inserts
Turning Inserts Troubleshooting Guide - Within this page you can analyse the problems against sample images and how to take corrective action to get the longest life from your inserts.
Threading Insert Troubleshooting Guide - Identify threading insert problems, causes and solutions to get the best performance and life from your inserts.

Milling/Slotting
Milling Guide - informative guide covering most aspects necessary to know when deciding to use HSS, cobalt and carbide milling cutters. 
Cutter Troubleshooting -  problems, causes and solutions to your drilling woes. 

Drilling
Drill Troubleshooting Guide - Problems, causes and solutions to your drilling woes
Drill Sizes Chart -
Counterbore Sizes Metric - For standard metric cap head and countersunk head screws
Counterbore Sizes UN - For standard UN cap head and countersunk head screws

Tapping
Tap Guide - informative guide covering all aspects necessary to know when deciding to tap holes. 
Tap Pictorial Chart- quick reference diagram for selecting the correct tap for the correct material.
Thread Forms - Table showing thread form designations
Metric Threads & Tapping Drill Sizes - for Metric and Metric Fine taps
UN Threads & Tapping Drill Sizes - for UNC and UNF
BA Threads & Tapping Drill Sizes - for BA taps
BS Cycle Threads & Tapping Drill Sizes - for BS Cyle taps
BSW & BSF Threads & Tapping Drill Sizes - for BSW and BSF taps
BSP Threads & Tapping Drill Sizes - for BSPT and BSPF pipe thread taps
NPT Threads & Tapping Drill Sizes - for National Pipe Taper (NPT) Taps
tolerances for our ISO Metric Coarse machine taps
ISO Machine Tap Tolerances -Tap Troubleshooting Guide - Covers problems and solutions to: Tapped hole oversize; Stripped threads; Bell mouthed tapped holes; Unsatisfactory thread surface finish; Partial chipping of tap; Excessive tap wear; and Tap breakage.

Thread Milling
Programming Data for CNC Machines - Program data G-Codes for thread milling and Explanation of parameters.
Feeds & Speeds for Thread Milling - Recommended cutting speeds for different materials & Formulas for calculating speed and feed rates