محول ظرف، خيط 1-8 بوصة قطر 4 بوصة، 3 فتحات

Drilled the three holes myself on the lathe, and they lined up perfectly with the chuck’s mounting pattern. Took a bit of careful setup since the adapter needs machining, but the 4" diameter feels solid and true once fitted.

Fit the 4" chuck from my mini lathe perfectly after a quick facing cut on the backplate. The three threaded holes lined up exactly with my chuck's bolt pattern.

The three pre-drilled holes saved me a ton of setup time, and the 1"-8 threads engaged smoothly on my spindle. It needed a bit of facing on the lathe before use, but once that was done, the chuck mounted dead true.