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Drill Chart: Bit Sizes [ Decimal, Number, Letter, Metric ]

by Bob Warfield | Aug 16, 2019 | Blog, CNC Beginner, Machining Techniques, Software

It’s very convenient to have a drill chart around with bit sizes, so we thought we’d put one here for you.  It covers decimal, fractions, numbered drill bits, letter drill sizes, metric drill bits, and probably a few more things I forgot to mention. For...

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Bridgeport Mill: Past & Future for the Classic Knee Mill

by Bob Warfield | Aug 15, 2019 | Blog, CNC Beginner, Cool, Machining Techniques, Manual Machining

Bridgeport Mill: Past & Future for the Classic Knee Mill Once upon a time in Bridgeport, Connecticut, there lived a man named Rudolph Bannow who conceived the now classic Bridgeport Mill.  The design was done in 1936 and the knee mills went on sale in 1938.  They...

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Deep Hole Drilling 2019: Easy Guide [Tips, CNC Programming, & Video]

by Bob Warfield | Aug 15, 2019 | Blog, Feeds and Speeds, GCode, Machining Techniques

Deep Hole Drilling 2019: Easy Guide with Tips, CNC Programming, & Video Note:  This is Lesson 15 of our Free Email Feeds & Speeds Master Class.  Click here to learn more about the Master Class. Ever do a job requiring hundreds or even thousands of holes to be...

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Sine Bar, Sine Plate & Sine Vise [ 2019 Complete Guide, Free Calculator ]

by Bob Warfield | Aug 14, 2019 | Blog, CNC Beginner, CNC Products, Machining Techniques, NewFeatures, Software

Sine Bar, Sine Plate & Sine Vise [ 2019 Complete Guide, Free Calculator ] We give the Sine Bar, Sine Plate, and Sine Vise a special place in angle measurement because they’re used both for measuring and for fixturing when specific angles other than 90...

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Press Fit Calculator and Tolerances [ Free Software ]

by Bob Warfield | Aug 14, 2019 | Blog, CNC Beginner, CNC Manufacturing & Job Shops, Machining Techniques, Software

Press Fit Calculator and Tolerances [ Free Software ] Ever wonder what press fit tolerances are or where to get a press fit calculator to make it easy for you to machine press fits?  Perhaps you need this information for a press fit bearing, for example. Look no...

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Solid Carbide End Mill Coatings, Grades, and Geometries [ FS Lesson 8 ]

by Bob Warfield | Aug 14, 2019 | Blog, CNC Beginner, CNC Products, Feeds and Speeds, Machining Techniques

Note:  This article is Lesson 8 of our Feeds & Speeds Master Class. End Mill Coatings, Grades & Geometries?  Why are some end mills so much more expensive, and are they worth it? Every machinist must have wondered about this question at some point.  Many...

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