Part way through the chuck production process, we pull a few blanks off the line and leave them unfinished. They can be a real time-saver for the machinist who wants to make a particular piece of tooling that threads onto the spindle. The center hole is already drilled and tapped to 3/4-16 and a hole is provided in the side for tightening with a Tommy Bar. The steel is free-machining 12L14, which is easy to turn, provides a good finish and can be hardened if desired.
Think of this part as an oil painter might look at a framed and prestretched canvas. Yes, you could build a frame, stretch and prepare the canvas yourself, but wouldn't you rather get right to the painting? Our big machines have done the "hogging out" so you can get right to the important part of the job.
CA Prop 65 WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance know to the State of California to cause cancer. Avoid inhaling wood dust or use dust mask or other safeguards for personal protection.
I can do all this through him who gives me strength. Philippians 4:13