Here is a wealth of information about many machining topics.

Machinists References

Cutting speeds

This page gives cutting speeds for turning, milling, and drilling of several different materials. It includes a calculator to figure the spindle speed required.

Cutting Speeds – LittleMachineShop.com

Dimensions of Standard Tapers

This page give the dimensions of Morse, Jacobs, Brown & Sharpe, and Jarno tapers.

Dimensions of Standard Tapers – LittleMachineShop.com

Drill Sizes - Lettered

This chart shows the diameters of letter gauge drills size A (the smallest) to size Z (the largest).

Letter Drill Sizes – LittleMachineShop.com

Drill Sizes - Numbered

This chart shows the diameters of number gauge drills size 80 (the smallest) to size 1 (the largest).

Number Drill Sizes – LittleMachineShop.com

Fraction - Decimal - Metric Conversions

This is a chart of fractional inches represented in decimal inches and millimeters.

Fraction - Decimal - Metric Conversions – LittleMachineShop.com

Fuel for Stirling engines

Suggestions for fuel for powering Stirling engines.

Fuel for Stirling Engines – LittleMachineShop.com

Lathe spindle threads and adapters

This chart shows the spindle thread of many lathes. But don't count on it. Measure the threads on your spindle.

Chuck Backplate Adapters – LittleMachineShop.com

Paint colors

We have identified paints that match the various colors used to paint mini lathes and mini mills.

Paint Colors – LittleMachineShop.com

Rake & relief for lathe tools

This page give rake and relief angles for turning various materials with high speed steel tool bits.

Rake and Relief Angles – LittleMachineShop.com

Symbols used on our drawings

These symbols are used on the Mechanical Models engine drawings as well as on many other drawings.

Symbols Used on Our Drawings – LittleMachineShop.com

Tap & clearance drill sizes

This tap and clearance drill chart shows tap and clearance drill sizes for standard threads. There is also a printable version that has both metric and inch threads.

Tap & Clearance Drill Sizes – LittleMachineShop.com

Machinists Resources

Here is a wealth of information about machining topics and resources for every machining project.

Machinists YouTube Channels

See YouTube channels that relate to machining. These guys do some amazing stuff!

See Machinists YouTube Channels