Red Hardness


In this opening video I discuss future topics and also do a demonstration on how the metallurgical term red hardness relates to carbon and high speed steels.

Grinding Turning and Facing Tools for the Lathe

In this video I discuss cutter geometry of the turning and facing tool for the lathe and do a demonstration on how to grind them.

How to Grind and Use a Flat Bottom Drill

An easy way to create a non-precision flat bottom hole is with a flat bottom drill. This video demonstrates how to quickly make and use one.

How to Grind a Sheet Metal Drill

Sheet metal drills, spur drills or brad point drills are an excellent way to drill a round hole in sheet metal or wood. This video demonstrates how to grind one.

How to Hand Sharpen a Twist Drill

A simple step by step procedure for hand sharpening twist drills.

How to Make a Twist Drill Safe for Use on Brass and Plastics

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One of the most hazardous operations in the shop is drilling holes in plastic or brass, especially in the drill press. Here is a simple technique to prevent drills from grabbing when drilling soft materials.

Thread Cutting on the Lathe, Part Three – Grinding the Tool


In this episode of thread cutting on the lathe we calculate the width of the flat and discuss three different ways to calculate the helix angle.