boring a clearance hole

The design of the z-axis spindle of my tool grinding machine is really bad with a lot of play. Thus I decided to modify it and add a second axial bearing. This required a slightly larger hole to accommodate the bearing. The Wohlhaupter UPA5 facing and boring head was used to bore out the clearance hole

[@timmienorrie]

Nice work. The sound difference between the blunt tool and the sharp tool is remarkable. Thank you.

[@HaraldFinster]

Indeed. The original tool didn't even look bad. But the fresh grind made a huge difference. Thanks for your comment.

[@johnsherborne3245]

Thanks for taking the time to share your fun, the finish seemed very satisfying. Well done on the pun too!

[@glennmorrissey5309]

Thank you for uploading this Harald. Don't worry, you weren't boring ....

[@MASI_forging]

Great work dude. 👍👍