Experts in project management often compare tasks to assembling LEGO blocks to accomplish large projects, but they overlook that LEGO pieces connect because of tension, friction and interference.
Making a square bushing to grind lathe tools in a round collet
The Gorton 265 needs one of these for making hss tools. I have a 1/2″ one but the bulk of my lathe tooling is 3/8″
This video is a huge help