How to drill bearing balls for mounting into a sturdy indicator mount

This time, a stick has been made for a sturdy indicator stand.
The stick itself is simple enough, but it has a bearing ball attached to one end.
Machining a bearing ball can be challenging because the ball is very hard.
But is it tough on the inside or is it like a punk that looks tough but is a pink marshmallow on the inside?
This video has some animations, music, talking head and a lot of machining.
In this video I use:
- Weiler Matador SV (1972) Lathe
- Makita bench grinder
Chapters:
00:00 Start animation
00:46 Introduction
02:35 Test Holder for Threaded Ball
03:54 Facing
04:12 Setup for turning outside diameter
06:31 Turning outside diameter
10:17 Rounding using a radius tool
13:08 Threading with a M6 die
15:00 Parting from the host material
16:14 Threading a Bearing Ball
18:18 Grinding a flat on the ball in bench grinder
19:45 Attaching the ball to the chuck
21:00 Drilling a hole in a bearing ball
23:55 Tapping a M6 thread in a bearing ball
26:51 Test Holder for Glued Ball
28:47 Preparing of the ball for gluing
30:17 Gluing the ball
31:43 Attaching the ball by soldering
35:04 Attaching the ball by brazing
39:01 Testing attachment methods
42:36 Grinding a precise recess in the bearing ball
47:23 Drilling a hole in a bearing ball
51:12 Turning rounding on the end of the stick
54:16 Accelerated finishing of the bar with music
57:06 Gluing the ball
59:04 Afterwords
59:43 End credits
The video is spoken in Finnish but it has good quality hand written subtitles in English, German and Finnish.

[@juhavuorinen3945]

Se käsiruuvipenkki on nimeltään viilain☺️

[@FinnoUgricMachining]

Ahah ... Engalinkieliset tituleeraavat sitä "Hand Vice" ja siksi meni suomenkielinen nimi noin. Höh 😋

[@juhavuorinen3945]

Tuli mieleen, että et kokeillut sorvata siitä kuulasta pintaa tasaiseksi kovametalli palalla🤔

[@FinnoUgricMachining]

@@juhavuorinen3945 Ajattelin niin tehdä mutta päädyin Dremel-hiontaan leikkuuvoimien takia.

[@husvarnaman8545]

Tuon kuulan saa "hitsattua" ilman hitsauskonetta ihan sorvilla. Tappi sorvipakkaan ja kuula pylkässä kiinni olevaan poraistukkaan. Sorviin kierroksia ja sitten pikkuhiljaa alkaa painattamaan pylkällä kuulaa kohti tappia kunnes kuula ja tapinpää käyvät punahehkussa.

[@FinnoUgricMachining]

@@husvarnaman8545 Siinä muuttuu myös karkaisu punahehkuiseksi 😎