Special Guest: Stefan Gotteswinter (@stefan_gtwr on IG, Stefan Gotteswinter on YT).

Precision Cordless Drill Balancing. Side-saddle Grinding. What a pair of stones! Learning to be, and not to be precise. Legal beer.

0:00 Welcome and housekeeping

4:00 Stefan Gotteswinter joins

5:25 Has Stefan been following Spencer's interest in lapping?

5:50 Stefan's recent video about drilling on the lathe using the carriage instead of the tailstock.

8:00 Giving away a McMaster-Carr catalog

11:05 Any tips on making Annular Cutters

12:30 Favorite or preferred brand of lapping compound?

15:30 Follow up on annular cutter, to use on a lathe

17:00 Silver Steel is a term used in the UK for Drill Rod; it's Silberstahl in German

17:55 What German Ginger Beer does Stefan recommend?

18:55 If Ginger Beer is illegal in Germany, how do you Justify Radler?

20:30 What is the smallest part Stefan has made in his shop?

21:18 How difficult is it for Stefan to get parts Nitrided

22:13 If you had Elon Musk's money, which Mill or Lathe do you buy?

23:50 What is your favorite way to "Clock Out" a headstock?

26:55 For M1.2 Tapped hole what type of Tap do you recommend?

28:15 Adam B says he has a way to align a Headstock with the Cross Slide using a Special Tool that has a Gauge Ball on it. Details to Follow.

29:10 How to prevent M3 Taps breaking in stainless steel on a CNC lathe?

34:20 Marvin Groeb @marvgro recommends Zirconia nanoparticles as a lubricant

30:45 How to improve the rigidity between the head and vertical column of an RF-45

32:20 Do you use IPA (isopropyl alcohol) on steel in the CNC router? How do you prevent it catching fire?

35:05 Stefan is asked for his opinion on Adam Demuth's (@adamthemachinist) 3D printed Vee blocks

36:55 Stefan is asked for drawings of his addendum to Robin Renzetti's D-Bit Grinder modifications

38:05 Adam B (@Laneymachinetech) ask for Stefan's comments on Cylindrical Grinding and Lapping to optimize geometry and surface finish.

42:05 Spencer asks Stefan about his new Grinder

51:30 What do people need to learn to do more precise work.

53:50 Stefan is asked to regrind precision ground stones that he mad for a customer.

57:45 When grinding a radius on the D-Bit, how do you indicate the offset of the work?

59:10 What is the spindle speed of the D-Bit?

59:50 What projects does Stefan most enjoy?

1:01:30 What is missing from Stefan's tool collection?