Chuck thread hygiene

[Toolmaker51]

What? No plans? No process instructions? And the finish of the bulldozer; Deere green or CAT yellow?


Good job Marv; wish I had a nickel for every noob I've had to extract a chuck for. Way back Industrial Arts pupils made these; some rolled spring end round like a spark-lighter.
Before OSHA (or in absence of) a squirt of lighter fluid and CCW'd spindle by hand to 'flush' the tiniest chips out. Tiny ones in thread roots really cause the jams. Leaves a nice film too.